• enPR: to͞oth, IPA: /tuːθ/
  • (Wales, Midlands, usually) IPA: /tʊθ/

tooth (plural teeth)

  1. A hard, calcareous structure present in the mouth of many vertebrate animals, generally used for eating.
    Synonyms: Thesaurus:tooth
    hypo en
  2. A sharp projection on the blade of a saw or similar implement.
  3. A projection on the edge of a gear that meshes with similar projections on adjacent gears, or on the circumference of a cog that engages with a chain.
  4. (zoology) A projection or point in other parts of the body resembling the tooth of a vertebrate animal.
  5. (botany) A pointed projection from the margin of a leaf.
  6. (animation) The rough surface of some kinds of cel or other films that allows better adhesion of artwork.
  7. (figurative) Liking, fondness (compare toothsome).
    Synonyms: fondness, appetite, taste, palate
    I have a sweet tooth: I love sugary treats.
    • 1693, John Dryden, “The Third Satire of Aulus Persius Flaccus”, in The Satires of Decimus Junius Juvenalis:
      These are not dishes for thy dainty tooth
  8. (algebraic geometry) An irreducible component of a comb that intersects the handle in exactly one point, that point being distinct from the unique point of intersection for any other tooth of the comb.
Translations Translations Translations Verb

tooth (tooths, present participle toothing; past and past participle toothed)

  1. To provide or furnish with teeth.
    • 1815, William Wordsworth, “The Brothers”:
      His Wife sate near him, teasing matted wool, / While, from the twin cards toothed with glittering wire / He fed the spindle […]
  2. To indent; to jag.
    to tooth a saw
  3. To lock into each other, like gear wheels.

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