What is Tooth?

Tooth definition and meaning on Dictionary terms:
noun, plural teeth.
(in most vertebrates) one of the hard bodies or processes usually attached in a row to each jaw, serving for the prehension and mastication of food, as weapons of attack or defense, etc., and in mammals typically composed chiefly of dentin surrounding a sensitive pulp and covered on the crown with enamel.
(in invertebrates) any of various similar or analogous processes occurring in the mouth or alimentary canal, or on a shell.
any projection resembling or suggesting a tooth.

one of the projections of a comb, rake, saw, etc.
Machinery. any of the uniform projections on a gear or rack by which it drives, or is driven by, a gear, rack, or worm.any of the uniform projections on a sprocket by which it drives or is driven by a chain.

Botany. any small, toothlike marginal of the toothlike divisions of the peristome of mosses.

a sharp, distressing, or destructive attribute or agency.
taste, relish, or liking.
a surface, as on a grinding wheel or sharpening stone, slightly roughened so as to increase friction with another part.
a rough surface created on a paper made for charcoal drawing, watercolor, or the like, or on canvas for oil painting.

verb (used with object), toothed [tootht, toothd] /tu?t, tu