pointer 音标拼音: [p'ɔɪntɚ]
n . 指示物,教鞭,暗示
n . 指针
指示物,教鞭,暗示指针
pointer 指示装置; 指标; 指标( 器 ); 指针; 指示字
P pointer 指标
pointer n 1 :
a mark to indicate a direction or relation [
synonym : {
arrow },
{
pointer }]
2 :
an indicator as on a dial 3 : (
computer science )
indicator consisting of a movable spot of light (
an icon )
on a visual display ;
moving it allows the user to point to commands or screen positions [
synonym : {
cursor },
{
pointer }]
4 :
a strong slender smooth -
haired dog of Spanish origin having a white coat with brown or black patches ;
scents out and points to game [
synonym : {
pointer }, {
Spanish pointer }]
Point \
Point \,
n . [
F .
point ,
and probably also pointe ,
L .
punctum ,
puncta ,
fr .
pungere ,
punctum ,
to prick .
See {
Pungent },
and cf . {
Puncto }, {
Puncture }.]
1 .
That which pricks or pierces ;
the sharp end of anything ,
esp .
the sharp end of a piercing instrument ,
as a needle or a pin .
[
1913 Webster ]
2 .
An instrument which pricks or pierces ,
as a sort of needle used by engravers ,
etchers ,
lace workers ,
and others ;
also ,
a pointed cutting tool ,
as a stone cutter '
s point ;
--
called also {
pointer }.
[
1913 Webster ]
3 .
Anything which tapers to a sharp ,
well -
defined termination .
Specifically :
A small promontory or cape ;
a tract of land extending into the water beyond the common shore line .
[
1913 Webster ]
4 .
The mark made by the end of a sharp ,
piercing instrument ,
as a needle ;
a prick .
[
1913 Webster ]
5 .
An indefinitely small space ;
a mere spot indicated or supposed .
Specifically : (
Geom .)
That which has neither parts nor magnitude ;
that which has position ,
but has neither length ,
breadth ,
nor thickness , --
sometimes conceived of as the limit of a line ;
that by the motion of which a line is conceived to be produced .
[
1913 Webster ]
6 .
An indivisible portion of time ;
a moment ;
an instant ;
hence ,
the verge .
[
1913 Webster ]
When time '
s first point begun Made he all souls . --
Sir J .
Davies .
[
1913 Webster ]
7 .
A mark of punctuation ;
a character used to mark the divisions of a composition ,
or the pauses to be observed in reading ,
or to point off groups of figures ,
etc .;
a stop ,
as a comma ,
a semicolon ,
and esp .
a period ;
hence ,
figuratively ,
an end ,
or conclusion .
[
1913 Webster ]
And there a point ,
for ended is my tale . --
Chaucer .
[
1913 Webster ]
Commas and points they set exactly right . --
Pope .
[
1913 Webster ]
8 .
Whatever serves to mark progress ,
rank ,
or relative position ,
or to indicate a transition from one state or position to another ,
degree ;
step ;
stage ;
hence ,
position or condition attained ;
as ,
a point of elevation ,
or of depression ;
the stock fell off five points ;
he won by tenpoints . "
A point of precedence ." --
Selden . "
Creeping on from point to point ." --
Tennyson .
[
1913 Webster ]
A lord full fat and in good point . --
Chaucer .
[
1913 Webster ]
9 .
That which arrests attention ,
or indicates qualities or character ;
a salient feature ;
a characteristic ;
a peculiarity ;
hence ,
a particular ;
an item ;
a detail ;
as ,
the good or bad points of a man ,
a horse ,
a book ,
a story ,
etc .
[
1913 Webster ]
He told him ,
point for point ,
in short and plain .
--
Chaucer .
[
1913 Webster ]
In point of religion and in point of honor . --
Bacon .
[
1913 Webster ]
Shalt thou dispute With Him the points of liberty ? --
Milton .
[
1913 Webster ]
10 .
Hence ,
the most prominent or important feature ,
as of an argument ,
discourse ,
etc .;
the essential matter ;
esp .,
the proposition to be established ;
as ,
the point of an anecdote . "
Here lies the point ." --
Shak .
[
1913 Webster ]
They will hardly prove his point . --
Arbuthnot .
[
1913 Webster ]
11 .
A small matter ;
a trifle ;
a least consideration ;
a punctilio .
[
1913 Webster ]
This fellow doth not stand upon points . --
Shak .
[
1913 Webster ]
[
He ]
cared not for God or man a point . --
Spenser .
[
1913 Webster ]
12 . (
Mus .)
A dot or mark used to designate certain tones or time ;
as :
(
a ) (
Anc .
Mus .)
A dot or mark distinguishing or characterizing certain tones or styles ;
as ,
points of perfection ,
of augmentation ,
etc .;
hence ,
a note ;
a tune . "
Sound the trumpet --
not a levant ,
or a flourish ,
but a point of war ." --
Sir W .
Scott .
(
b ) (
Mod .
Mus .)
A dot placed at the right hand of a note ,
to raise its value ,
or prolong its time ,
by one half ,
as to make a whole note equal to three half notes ,
a half note equal to three quarter notes .
[
1913 Webster ]
13 . (
Astron .)
A fixed conventional place for reference ,
or zero of reckoning ,
in the heavens ,
usually the intersection of two or more great circles of the sphere ,
and named specifically in each case according to the position intended ;
as ,
the equinoctial points ;
the solstitial points ;
the nodal points ;
vertical points ,
etc .
See {
Equinoctial Nodal }.
[
1913 Webster ]
14 . (
Her .)
One of the several different parts of the escutcheon .
See {
Escutcheon }.
[
1913 Webster ]
15 . (
Naut .)
(
a )
One of the points of the compass (
see {
Points of the compass },
below );
also ,
the difference between two points of the compass ;
as ,
to fall off a point .
(
b )
A short piece of cordage used in reefing sails .
See {
Reef point },
under {
Reef }.
[
1913 Webster ]
16 . (
Anc .
Costume )
A a string or lace used to tie together certain parts of the dress . --
Sir W .
Scott .
[
1913 Webster ]
17 .
Lace wrought the needle ;
as ,
point de Venise ;
Brussels point .
See Point lace ,
below .
[
1913 Webster ]
18 .
pl . (
Railways )
A switch . [
Eng .]
[
1913 Webster ]
19 .
An item of private information ;
a hint ;
a tip ;
a pointer .
[
Cant ,
U .
S .]
[
1913 Webster ]
20 . (
Cricket )
A fielder who is stationed on the off side ,
about twelve or fifteen yards from ,
and a little in advance of ,
the batsman .
[
1913 Webster ]
21 .
The attitude assumed by a pointer dog when he finds game ;
as ,
the dog came to a point .
See {
Pointer }.
[
1913 Webster ]
22 . (
Type Making )
A standard unit of measure for the size of type bodies ,
being one twelfth of the thickness of pica type .
See {
Point system of type },
under {
Type }.
[
1913 Webster ]
23 .
A tyne or snag of an antler .
[
1913 Webster ]
24 .
One of the spaces on a backgammon board .
[
1913 Webster ]
25 . (
Fencing )
A movement executed with the saber or foil ;
as ,
tierce point .
[
1913 Webster ]
26 . (
Med .)
A pointed piece of quill or bone covered at one end with vaccine matter ; --
called also {
vaccine point }.
[
Webster 1913 Suppl .]
27 .
One of the raised dots used in certain systems of printing and writing for the blind .
The first practical system was that devised by Louis Braille in 1829 ,
and still used in Europe (
see {
Braille }).
Two modifications of this are current in the United States :
{
New York point }
founded on three bases of equidistant points arranged in two lines (
viz ., : :: :::),
and a later improvement ,
{
American Braille },
embodying the Braille base (:::)
and the New -
York -
point principle of using the characters of few points for the commonest letters .
[
Webster 1913 Suppl .]
28 .
In technical senses :
(
a )
In various games ,
a position of a certain player ,
or ,
by extension ,
the player himself ;
as : (
1 ) (
Lacrosse &
Ice Hockey )
The position of the player of each side who stands a short distance in front of the goal keeper ;
also ,
the player himself . (
2 ) (
Baseball )
(
pl .)
The position of the pitcher and catcher .
(
b ) (
Hunting )
A spot to which a straight run is made ;
hence ,
a straight run from point to point ;
a cross -
country run . [
Colloq .
Oxf .
E .
D .]
(
c ) (
Falconry )
The perpendicular rising of a hawk over the place where its prey has gone into cover .
(
d )
Act of pointing ,
as of the foot downward in certain dance positions .
[
Webster 1913 Suppl .]
Note :
The word point is a general term ,
much used in the sciences ,
particularly in mathematics ,
mechanics ,
perspective ,
and physics ,
but generally either in the geometrical sense ,
or in that of degree ,
or condition of change ,
and with some accompanying descriptive or qualifying term ,
under which ,
in the vocabulary ,
the specific uses are explained ;
as ,
boiling point ,
carbon point ,
dry point ,
freezing point ,
melting point ,
vanishing point ,
etc .
[
1913 Webster ]
{
At all points },
in every particular ,
completely ;
perfectly .
--
Shak .
{
At point }, {
In point }, {
At the point }, {
In the point },
or {
On the point },
as near as can be ;
on the verge ;
about (
see {
About },
prep .,
6 );
as ,
at the point of death ;
he was on the point of speaking . "
In point to fall down ." --
Chaucer .
"
Caius Sidius Geta ,
at point to have been taken ,
recovered himself so valiantly as brought day on his side ."
--
Milton .
{
Dead point }. (
Mach .)
Same as {
Dead center },
under {
Dead }.
{
Far point } (
Med .),
in ophthalmology ,
the farthest point at which objects are seen distinctly .
In normal eyes the nearest point at which objects are seen distinctly ;
either with the two eyes together (
binocular near point ),
or with each eye separately (
monocular near point ).
{
Nine points of the law },
all but the tenth point ;
the greater weight of authority .
{
On the point }.
See {
At point },
above .
{
Point lace },
lace wrought with the needle ,
as distinguished from that made on the pillow .
{
Point net },
a machine -
made lace imitating a kind of Brussels lace (
Brussels ground ).
{
Point of concurrence } (
Geom .),
a point common to two lines ,
but not a point of tangency or of intersection ,
as ,
for instance ,
that in which a cycloid meets its base .
{
Point of contrary flexure },
a point at which a curve changes its direction of curvature ,
or at which its convexity and concavity change sides .
{
Point of order },
in parliamentary practice ,
a question of order or propriety under the rules .
{
Point of sight } (
Persp .),
in a perspective drawing ,
the point assumed as that occupied by the eye of the spectator .
{
Point of view },
the relative position from which anything is seen or any subject is considered .
{
Points of the compass } (
Naut .),
the thirty -
two points of division of the compass card in the mariner '
s compass ;
the corresponding points by which the circle of the horizon is supposed to be divided ,
of which the four marking the directions of east ,
west ,
north ,
and south ,
are called cardinal points ,
and the rest are named from their respective directions ,
as N .
by E .,
N .
N .
E .,
N .
E .
by N .,
N .
E .,
etc .
See Illust .
under {
Compass }.
{
Point paper },
paper pricked through so as to form a stencil for transferring a design .
{
Point system of type }.
See under {
Type }.
{
Singular point } (
Geom .),
a point of a curve which possesses some property not possessed by points in general on the curve ,
as a cusp ,
a point of inflection ,
a node ,
etc .
{
To carry one '
s point },
to accomplish one '
s object ,
as in a controversy .
{
To make a point of },
to attach special importance to .
{
To make a point },
or {
To gain a point },
accomplish that which was proposed ;
also ,
to make advance by a step ,
grade ,
or position .
{
To mark a point },
or {
To score a point },
as in billiards ,
cricket ,
etc .,
to note down ,
or to make ,
a successful hit ,
run ,
etc .
{
To strain a point },
to go beyond the proper limit or rule ;
to stretch one '
s authority or conscience .
{
Vowel point },
in Arabic ,
Hebrew ,
and certain other Eastern and ancient languages ,
a mark placed above or below the consonant ,
or attached to it ,
representing the vowel ,
or vocal sound ,
which precedes or follows the consonant .
[
1913 Webster ]
Pointer \
Point "
er \,
n .
One who ,
or that which ,
points .
Specifically :
(
a )
The hand of a timepiece .
(
b ) (
Zool .)
One of a breed of dogs trained to stop at scent of game ,
and with the nose point it out to sportsmen .
(
c )
pl . (
Astron .)
The two stars (
Merak and Dubhe )
in the Great Bear ,
the line between which points nearly in the direction of the north star .
See Illust .
of {
Ursa Major }.
(
b )
pl . (
Naut .)
Diagonal braces sometimes fixed across the hold .
[
1913 Webster ]
Dog \
Dog \ (
d [
add ]
g or d [
o ^]
g ),
n . [
AS .
docga ;
akin to D .
dog mastiff ,
Dan .
dogge ,
Sw .
dogg .]
1 . (
Zool .)
A quadruped of the genus {
Canis },
esp .
the domestic dog ({
Canis familiaris }).
Note :
The dog is distinguished above all others of the inferior animals for intelligence ,
docility ,
and attachment to man .
There are numerous carefully bred varieties ,
as the {
akita }, {
beagle }, {
bloodhound },
{
bulldog }, {
coachdog }, {
collie }, {
Danish dog },
{
foxhound }, {
greyhound }, {
mastiff }, {
pointer },
{
poodle }, {
St .
Bernard }, {
setter }, {
spaniel }, {
spitz },
{
terrier }, {
German shepherd }, {
pit bull }, {
Chihuahua },
etc .
There are also many mixed breeds ,
and partially domesticated varieties ,
as well as wild dogs ,
like the dingo and dhole . (
See these names in the Vocabulary .)
[
1913 Webster PJC ]
2 .
A mean ,
worthless fellow ;
a wretch .
[
1913 Webster ]
What is thy servant ,
which is but a dog ,
that he should do this great thing ? --
2 Kings viii .
13 (
Rev .
Ver . )
[
1913 Webster ]
3 .
A fellow ; --
used humorously or contemptuously ;
as ,
a sly dog ;
a lazy dog . [
Colloq .]
[
1913 Webster ]
4 . (
Astron .)
One of the two constellations ,
Canis Major and Canis Minor ,
or the Greater Dog and the Lesser Dog .
Canis Major contains the Dog Star (
Sirius ).
[
1913 Webster ]
5 .
An iron for holding wood in a fireplace ;
a firedog ;
an andiron .
[
1913 Webster ]
6 . (
Mech .)
(
a )
A grappling iron ,
with a claw or claws ,
for fastening into wood or other heavy articles ,
for the purpose of raising or moving them .
(
b )
An iron with fangs fastening a log in a saw pit ,
or on the carriage of a sawmill .
(
c )
A piece in machinery acting as a catch or clutch ;
especially ,
the carrier of a lathe ,
also ,
an adjustable stop to change motion ,
as in a machine tool .
[
1913 Webster ]
7 .
an ugly or crude person ,
especially an ugly woman . [
slang ]
[
PJC ]
8 .
a {
hot dog }. [
slang ]
[
PJC ]
Note :
Dog is used adjectively or in composition ,
commonly in the sense of relating to ,
or characteristic of ,
a dog .
It is also used to denote a male ;
as ,
dog fox or g -
fox ,
a male fox ;
dog otter or dog -
otter ,
dog wolf ,
etc .; --
also to denote a thing of cheap or mean quality ;
as ,
dog Latin .
[
1913 Webster ]
{
A dead dog },
a thing of no use or value . --
1 Sam .
xxiv .
14 .
{
A dog in the manger },
an ugly -
natured person who prevents others from enjoying what would be an advantage to them but is none to him .
{
Dog ape } (
Zool .),
a male ape .
{
Dog cabbage },
or {
Dog '
s cabbage } (
Bot .),
a succulent herb ,
native to the Mediterranean region ({
Thelygonum Cynocrambe }).
{
Dog cheap },
very cheap .
See under {
Cheap }.
{
Dog ear } (
Arch .),
an acroterium . [
Colloq .]
{
Dog flea } (
Zool .),
a species of flea ({
Pulex canis })
which infests dogs and cats ,
and is often troublesome to man .
In America it is the common flea .
See {
Flea },
and {
Aphaniptera }.
{
Dog grass } (
Bot .),
a grass ({
Triticum caninum })
of the same genus as wheat .
{
Dog Latin },
barbarous Latin ;
as ,
the dog Latin of pharmacy .
{
Dog lichen } (
Bot .),
a kind of lichen ({
Peltigera canina })
growing on earth ,
rocks ,
and tree trunks , --
a lobed expansion ,
dingy green above and whitish with fuscous veins beneath .
{
Dog louse } (
Zool .),
a louse that infests the dog ,
esp .
{
H [
ae ]
matopinus piliferus };
another species is {
Trichodectes latus }.
{
Dog power },
a machine operated by the weight of a dog traveling in a drum ,
or on an endless track ,
as for churning .
{
Dog salmon } (
Zool .),
a salmon of northwest America and northern Asia ; --
the {
gorbuscha }; --
called also {
holia },
and {
hone }.
{
Dog shark }. (
Zool .)
See {
Dogfish }.
{
Dog '
s meat },
meat fit only for dogs ;
refuse ;
offal .
{
Dog Star }.
See in the Vocabulary .
{
Dog wheat } (
Bot .),
Dog grass .
{
Dog whelk } (
Zool .),
any species of univalve shells of the family {
Nassid [
ae ]},
esp .
the {
Nassa reticulata }
of England .
{
To give to the dogs },
or {
To throw to the dogs },
to throw away as useless . "
Throw physic to the dogs ;
I '
ll none of it ." --
Shak .
{
To go to the dogs },
to go to ruin ;
to be ruined .
[
1913 Webster ]
67 Moby Thesaurus words for "
pointer ":
Gyropilot ,
advice ,
alerting ,
arrow ,
automatic pilot ,
blaze ,
boatheader ,
boatsteerer ,
caution ,
cicerone ,
clue ,
compass needle ,
courier ,
cowherd ,
coxswain ,
cue ,
direction ,
direction post ,
dragoman ,
drover ,
finger post ,
fist ,
goatherd ,
guide ,
guideboard ,
guidepost ,
guider ,
hand ,
helmsman ,
herd ,
herdsman ,
hint ,
hour hand ,
index ,
index finger ,
indicator ,
lead ,
lubber line ,
mercury ,
milepost ,
minute hand ,
monition ,
navigator ,
needle ,
office ,
passing word ,
piece of advice ,
pilot ,
point ,
recommendation ,
river pilot ,
rod ,
shepherd ,
sign ,
signboard ,
signpost ,
steer ,
steerer ,
steersman ,
stick ,
suggestion ,
tip ,
tip -
off ,
tour director ,
tour guide ,
warning ,
whisper 1 .
An {address }, from the point of view of a
programming language . A pointer may be typed , with its {type }
indicating the type of data to which it points .
The terms "pointer " and "reference " are generally
interchangeable although particular programming languages often
differentiate these two in subtle ways . For example , {Perl }
always calls them references , never pointers . Conversely , in
C , "pointer " is used , although "a reference " is often used to
denote the concept that a pointer implements .
{Anthony Hoare } once said :
Pointers are like jumps , leading wildly from one part of the
data structure to another . Their introduction into high -level
languages has been a step backward from which we may never
recover .
[C .A .R .Hoare "Hints on Programming Language Design ", 1973 ,
Prentice -Hall collection of essays and papers by Tony Hoare ].
2 . (Or "mouse pointer ") An {icon }, usually
a small arrow , that moves on the screen in response to
movement of a {pointing device }, typically a {mouse }. The
pointer shows the user which object on the screen will be
selected etc . when a mouse button is clicked .
(1999 -07 -07 )
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料: