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
2 : a projection resembling or suggesting the tooth of an animal in shape, arrangement, or action a saw tooth: such 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
3a teeth plural : effective means of enforcement drug laws with teethb : something that injures, tortures, devours, or destroys jealousy with rankling tooth — Thomas Gray
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.
Recent Examples of tooth from the Web
Excavations for train projects have turned up bison and camel bones as well as mastodon teeth and tusk fragments.
This often begins with footcare as part of a daily health routine that also includes care for each elephant's skin, teeth, eyes, and the inside of their mouths.
The bladder polyp, which looks like a pale blue tooth, stores water and glows in the dark.
Trump has already begun to weaken many of the domestic programs—such as Obama’s Clean Power Plan for the electricity sector, and the greenhouse-gas CAFE standards for cars—that would have added teeth to America’s Paris goals.
And Adam Jacobs, his gleaming white teeth, his charming costar Isabelle McCalla as Princess Jasmine and the rest have all acquired a little more attention to veracity and Broadway chops since this show's first turn on the rialto.
Customers can also order a weekly checklist game that rewards grade-schoolers with small prizes for brushing and flossing their teeth twice a day.
The researchers believe that the little tooth is enough to tell a horned dinosaur very similar to Triceratops.
That pact is voluntary, but California, Canada and Mexico are starting to carry out a joint policy with some teeth.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tooth'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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 centurySee Words from the same year
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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