<p><strong>Noun</strong></p><ul><li>(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.</li><li>(in invertebrates) Any of various similar or analogous processes occurring in the mouth or alimentary canal, or on a shell.</li><li>Any projection resembling or suggesting a tooth.</li><li>One of the projections of a comb, rake, saw, etc.</li><li>Machinery: any of the uniform projections on a gear or rack by which it drives, or is driven by, a gear, rack, or worm.</li><li>Any of the uniform projections on a sprocket by which it drives or is driven by a chain.</li><li>Botany: any small, toothlike marginal lobe.</li><li>One of the toothlike divisions of the peristome of mosses.</li><li>A sharp, distressing, or destructive attribute or agency.</li><li>Taste, relish, or liking.</li><li>Synonyms: predilection, partiality, fondness.</li><li>A surface, as on a grinding wheel or sharpening stone, slightly roughened so as to increase friction with another part.</li><li>A rough surface created on a paper made for charcoal drawing, watercolor, or the like, or on canvas for oil painting.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) To furnish with teeth.</li><li>To cut teeth upon.</li><li>(used without object) To interlock, as cogwheels.</li></ul>