tooth

noun
\ ˈtüth How to pronounce tooth (audio) \
plural teeth\ ˈtēth How to pronounce tooth (audio) \

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 defense
b : 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 as
a : 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 : cog
b : a small sharp-pointed marginal lobe or process on a plant
3a teeth plural : effective means of enforcement drug laws with teeth
b : something that injures, tortures, devours, or destroys jealousy with rankling tooth— Thomas Gray
4 : taste, liking
5 : a roughness of surface produced by mechanical or artificial means
in the teeth of
1 : in or into direct contact or collision with sailing in the teeth of a hurricaneCurrent Biography
2 : in direct opposition to rule had … been imposed by conquest in the teeth of obstinate resistance— A. J. Toynbee
to the teeth
: fully, completely armed to the teeth

Illustration of tooth

Illustration of tooth

tooth 1a: A outside of a molar: 1 crown, 2 neck, 3 roots; B cross section of a molar: 1 enamel, 2 dentin, 3 pulp, 4 cementum, 5 gum; C dentition of adult human, upper; D dentition of adult human, lower: 1 incisors, 2 canines, 3 bicuspids, 4 molars

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Other Words from tooth

toothlike \ ˈtüth-​ˌlīk How to pronounce tooth (audio) \ adjective

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.
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Recent Examples on the Web The tooth is finding a new home with the University of Michigan Museum of Paleontologists. Frank Miles, Fox News, 4 Oct. 2021 When Gina Brown, 66, came in recently for a teeth cleaning, Dr. Rulon discovered a cavity near a root — one that could quickly cost her the tooth. New York Times, 29 Aug. 2021 When Gina Brown, 66, came in recently for a teeth cleaning, Rulon discovered a cavity near a root — one that could quickly cost her the tooth. BostonGlobe.com, 29 Aug. 2021 In terms of best practices for applying a leave-in conditioner spray, Atkin recommends starting a few inches down from your roots and combing through your hair with a wide tooth comb, root to tip, when the hair is wet. Lauren Valent, Vogue, 3 Aug. 2021 Walker also got a gift from his predecessor — a shark tooth necklace like the one the quirky Wendell wore on the mound. Creg Stephenson | Cstephenson@al.com, al, 10 Mar. 2021 Wisdom tooth extraction results in a 3 to 10 percent improvement in taste precision two decades later. Rafil Kroll-zaidi, Harper's Magazine, 28 Sep. 2021 But not Starbuck, who became a San Francisco institution in his green beret and push-broom mustache over a buck tooth smile. Sam Whiting, San Francisco Chronicle, 23 Sep. 2021 Two startups, Videa Health and Overjet, both have roots at MIT and are developing software to spot tooth decay and gum disease earlier on dental X-rays. BostonGlobe.com, 9 Sep. 2021

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.

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First Known Use of tooth

before the 12th century, in the meaning defined at sense 1a

History and Etymology for tooth

Middle English, from Old English tōth; akin to Old High German zand tooth, Latin dent-, dens, Greek odont-, odous

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Time Traveler for tooth

Time Traveler

The first known use of tooth was before the 12th century

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Dictionary Entries Near tooth

toot

tooth

toothache

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Statistics for tooth

Last Updated

14 Oct 2021

Cite this Entry

“Tooth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tooth. Accessed 17 Oct. 2021.

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More Definitions for tooth

tooth

noun

English Language Learners Definition of tooth

: 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
: the power that makes something effective

tooth

noun
\ ˈtüth How to pronounce tooth (audio) \
plural teeth\ ˈtēth \

Kids Definition of tooth

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

Other Words from tooth

toothless \ ˈtüth-​ləs \ adjective

tooth

noun
\ ˈtüth How to pronounce tooth (audio) \
plural teeth\ ˈtēth How to pronounce tooth (audio) \

Medical Definition of tooth

: any of the hard bony appendages that are borne on the jaws and serve especially for the prehension and mastication of food — see milk tooth, permanent tooth

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