- any of a set of hard, bonelike structures set in the jaws of most vertebrates and used for biting, tearing, and chewing: a tooth consists typically of a sensitive, vascular pulp surrounded by dentin and coated on the crown with enamel and on the root with cementum: normally 32 are in the permanent set and 20 in the deciduous set of a human
- any of various analogous processes in invertebrates
- [pl.] denture (sense )
- something resembling a tooth; toothlike part, as on a saw, fork, rake, gearwheel, etc.; tine, prong, cog, etc.
- appetite or taste for something specified: now only in sweet tooth
- something that bites, pierces, or gnaws like a tooth: the teeth of the storm
- a rough surface, as on paper, metal, etc.
- [pl.] a sound or effective means of enforcing something: to put teeth into a law
- Bot. any small, pointed lobe, as of a leaf or of the fringe surrounding the opening of a capsule in mosses
Origin of toothMiddle English from Old English toth ( from an unverified form tanth), akin to German zahn from Indo-European an unverified form edont- ( from base an unverified form ed-, to eat) from source Classical Latin dens (gen. dentis), Classical Greek odous (gen. odontos)
- to provide with teeth
- to make jagged; indent
long in the tooth
tooth and nail