Definition of tooth
1a : one of the hard bony appendages that are borne on the jaws or in many of the lower vertebrates on other bones in the walls of the mouth or pharynx and serve especially for the prehension and mastication of food and as weapons of offense and defenseb : any of various usually hard and sharp processes especially about the mouth of an invertebrate
3 : a projection resembling or suggesting the tooth of an animal in shape, arrangement, or action <a saw tooth>: asa : any of the regular projections on the circumference or sometimes the face of a wheel that engage with corresponding projections on another wheel especially to transmit force : cogb : a small sharp-pointed marginal lobe or process on a plant
4a : something that injures, tortures, devours, or destroys <jealousy with rankling tooth — Thomas Gray>b plural : effective means of enforcement <drug laws with teeth>
5 : a roughness of surface produced by mechanical or artificial means
toothlikeplay \ˈtüth-ˌlīk\ adjective
in the teeth of
1 : in or into direct contact or collision with <sailing in the teeth of a hurricane — Current Biography>
2 : in direct opposition to <rule had…been imposed by conquest in the teeth of obstinate resistance — A. J. Toynbee>
Examples of tooth in a sentence
The dentist will have to pull that tooth.
You should brush your teeth every morning and night.
She clenched her teeth in anger.
He has a set of false teeth.
the teeth of a saw
The labor union showed that it has teeth.
Origin and Etymology of tooth
Middle English, from Old English tōth; akin to Old High German zand tooth, Latin dent-, dens, Greek odont-, odous
First Known Use: before 12th century
TOOTH Defined for English Language Learners
Definition of tooth for English Language Learners
: one of the hard white objects inside the mouth that are used for biting and chewing
: a sharp or pointed object that sticks out of something and is part of a row of similar objects
teeth : the power that makes something effective
TOOTH Defined for Kids
Definition of tooth for Students
1 : one of the hard bony structures set in sockets on the jaws of most vertebrates and used especially to chew and bite
2 : something like or suggesting an animal's tooth in shape, arrangement, or action <the teeth of a comb>
3 : one of the projections around the rim of a wheel that fit between the projections on another part causing the other part to move as the wheel turns
Seen and Heard
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