1. (n.)tooth (in most vertebrates) one of the hard bodies or processes usu. 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 sensitivepulp and covered on the crown with enamel.
2. tooth (in invertebrates) any of various similar or analogous processes occurring in the mouth or alimentary canal, or on a shell.
1. (noun)tooth one of the hard white objects in your mouth Have you brushed your teeth yet?
2. tooth one of a set of points that stick up from sth the teeth of the saw/comb/gear
Definition of 'tooth'
Webster Dictionary
1. (noun)tooth one of the hard, bony appendages which are borne on the jaws, or on other bones in the walls of the mouth or pharynx of most vertebrates, and which usually aid in the prehension and mastication of food
3. (noun)tooth any projection corresponding to the tooth of an animal, in shape, position, or office; as, the teeth, or cogs, of a cogwheel; a tooth, prong, or tine, of a fork; a tooth, or the teeth, of a rake, a saw, a file, a card
4. (noun)tooth a projecting member resembling a tenon, but fitting into a mortise that is only sunk, not pierced through
5. (noun)tooth one of several steps, or offsets, in a tusk. See Tusk
8. (noun)tooth any hard calcareous or chitinous organfound in the mouth of various invertebrates and used in feeding or procuring food; as, the teeth of a mollusk or a starfish