tooth 音标拼音: [t'uθ]
n . 牙齿,齿状物,嗜好
vt . 装以齿,咬,将…切成齿状
vi . 啮合
牙齿,齿状物,嗜好装以齿,咬,将…切成齿状啮合
tooth n 1 :
hard bonelike structures in the jaws of vertebrates ;
used for biting and chewing or for attack and defense 2 :
something resembling the tooth of an animal 3 :
toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell 4 :
a means of enforcement ; "
the treaty had no teeth in it "
5 :
one of a number of uniform projections on a gear Tooth \
Tooth \ (
t [=
oo ]
th ),
n .;
pl . {
Teeth } (
t [=
e ]
th ). [
OE .
toth ,
tooth ,
AS .
t [=
o ][
eth ];
akin to OFries .
t [=
o ]
th ,
OS . &
D .
tand ,
OHG .
zang ,
zan ,
G .
zahn ,
Icel .
t ["
o ]
nn ,
Sw . &
Dan .
tand ,
Goth .
tumpus ,
Lith .
dantis ,
W .
dant ,
L .
dens ,
dentis ,
Gr . '
odoy `
s , '
odo `
ntos ,
Skr .
danta ;
probably originally the p .
pr .
of the verb to eat . [
root ]
239 .
Cf . {
Eat }, {
Dandelion },
{
Dent }
the tooth of a wheel , {
Dental }, {
Dentist }, {
Indent },
{
Tine }
of a fork , {
Tusk }. ]
1 . (
Anat .)
One of the hard ,
bony appendages which are borne on the jaws ,
or on other bones in the walls of the mouth or pharynx of most vertebrates ,
and which usually aid in the prehension and mastication of food .
[
1913 Webster ]
Note :
The hard parts of teeth are principally made up of dentine ,
or ivory ,
and a very hard substance called enamel .
These are variously combined in different animals .
Each tooth consist of three parts ,
a crown ,
or body ,
projecting above the gum ,
one or more fangs imbedded in the jaw ,
and the neck ,
or intermediate part .
In some animals one or more of the teeth are modified into tusks which project from the mouth ,
as in both sexes of the elephant and of the walrus ,
and in the male narwhal .
In adult man there are thirty -
two teeth ,
composed largely of dentine ,
but the crowns are covered with enamel ,
and the fangs with a layer of bone called cementum .
Of the eight teeth on each half of each jaw ,
the two in front are incisors ,
then come one canine ,
cuspid ,
or dog tooth ,
two bicuspids ,
or false molars ,
and three molars ,
or grinding teeth .
The milk ,
or temporary ,
teeth are only twenty in number ,
there being two incisors ,
one canine ,
and two molars on each half of each jaw .
The last molars ,
or wisdom teeth ,
usually appear long after the others ,
and occasionally do not appear above the jaw at all .
[
1913 Webster ]
How sharper than a serpent '
s tooth it is To have a thankless child ! --
Shak .
[
1913 Webster ]
2 .
Fig .:
Taste ;
palate .
[
1913 Webster ]
These are not dishes for thy dainty tooth . --
Dryden .
[
1913 Webster ]
3 .
Any projection corresponding to the tooth of an animal ,
in shape ,
position ,
or office ;
as ,
the teeth ,
or cogs ,
of a cogwheel ;
a tooth ,
prong ,
or tine ,
of a fork ;
a tooth ,
or the teeth ,
of a rake ,
a saw ,
a file ,
a card .
[
1913 Webster ]
4 .
(
a )
A projecting member resembling a tenon ,
but fitting into a mortise that is only sunk ,
not pierced through .
(
b )
One of several steps ,
or offsets ,
in a tusk .
See {
Tusk }.
[
1913 Webster ]
[
1913 Webster ]
5 . (
Nat .
Hist .)
An angular or prominence on any edge ;
as ,
a tooth on the scale of a fish ,
or on a leaf of a plant ;
specifically (
Bot .),
one of the appendages at the mouth of the capsule of a moss .
See {
Peristome }.
[
1913 Webster ]
6 . (
Zool .)
Any hard calcareous or chitinous organ found in the mouth of various invertebrates and used in feeding or procuring food ;
as ,
the teeth of a mollusk or a starfish .
[
1913 Webster ]
{
In spite of the teeth },
in defiance of opposition ;
in opposition to every effort .
{
In the teeth },
directly ;
in direct opposition ;
in front .
"
Nor strive with all the tempest in my teeth ." --
Pope .
{
To cast in the teeth },
to report reproachfully ;
to taunt or insult one with .
{
Tooth and nail },
as if by biting and scratching ;
with one '
s utmost power ;
by all possible means . --
L '
Estrange . "
I shall fight tooth and nail for international copyright ."
--
Charles Reade .
{
Tooth coralline } (
Zool .),
any sertularian hydroid .
{
Tooth edge },
the sensation excited in the teeth by grating sounds ,
and by the touch of certain substances ,
as keen acids .
{
Tooth key },
an instrument used to extract teeth by a motion resembling that of turning a key .
{
Tooth net },
a large fishing net anchored . [
Scot .]
--
Jamieson .
{
Tooth ornament }. (
Arch .)
Same as {
Dogtooth },
n .,
2 .
{
Tooth powder },
a powder for cleaning the teeth ;
a dentifrice .
{
Tooth rash }. (
Med .)
See {
Red -
gum },
1 .
{
To show the teeth },
to threaten . "
When the Law shows her teeth ,
but dares not bite ." --
Young .
{
To the teeth },
in open opposition ;
directly to one '
s face .
"
That I shall live ,
and tell him to his teeth ." --
Shak .
[
1913 Webster ]
Tooth \
Tooth \,
v .
t . [
imp . &
p .
p . {
Toothed };
p .
pr . &
vb .
n .
{
Toothing }.]
1 .
To furnish with teeth .
[
1913 Webster ]
The twin cards toothed with glittering wire .
--
Wordsworth .
[
1913 Webster ]
2 .
To indent ;
to jag ;
as ,
to tooth a saw .
[
1913 Webster ]
3 .
To lock into each other .
See {
Tooth },
n .,
4 . --
Moxon .
[
1913 Webster ]
118 Moby Thesaurus words for "
tooth ":
Vandyke ,
aftertaste ,
asperity ,
baby tooth ,
bicuspid ,
bitter ,
blaze ,
bucktooth ,
bumpiness ,
canine ,
chop ,
choppiness ,
coarsen ,
cog ,
comb ,
crag ,
cragginess ,
crenellate ,
crenulate ,
crimp ,
crown ,
cuspid ,
cut ,
cutter ,
deciduous tooth ,
dent ,
denticle ,
denticulation ,
dentil ,
dentition ,
dogtooth ,
eyetooth ,
fang ,
flavor ,
fore tooth ,
gagtooth ,
gang tooth ,
gash ,
gold tooth ,
grain ,
granulate ,
granulation ,
grinder ,
gust ,
harrow ,
harshness ,
hispidity ,
incise ,
incisor ,
indent ,
inequality ,
irregularity ,
jag ,
jaggedness ,
joltiness ,
knurl ,
machicolate ,
milk tooth ,
mill ,
molar ,
nick ,
nonuniformity ,
notch ,
palate ,
peak ,
pecten ,
peg ,
permanent tooth ,
picot ,
pink ,
pivot tooth ,
premolar ,
projection ,
raggedness ,
rake ,
ratchet ,
relish ,
rough air ,
roughen ,
roughness ,
ruggedness ,
rugosity ,
salt ,
sapidity ,
sapor ,
savor ,
savoriness ,
sawtooth ,
scallop ,
scarify ,
score ,
scotch ,
scraggliness ,
scrivello ,
serrate ,
slash ,
smack ,
smooth ,
snag ,
snaggle ,
snaggletooth ,
sour ,
spire ,
sprocket ,
spur ,
steeple ,
stomach ,
sweet ,
tang ,
taste ,
tongue ,
turbulence ,
tush ,
tusk ,
unevenness ,
unsmoothness ,
ununiformity ,
wisdom tooth
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