Meaning of “tooth” - Learner’s Dictionary

tooth

noun [ C ] uk us /tuːθ/ (plural teeth)
MOUTH

A1 one of the hard, white objects in your mouth that you use for biting and crushing food:

You should brush your teeth twice a day.
TOOL

one of the row of metal or plastic points that stick out from a tool such as a comb (= thing used to make your hair tidy), or saw (= thing used to cut wood)

(Definition of “tooth” from the Cambridge Learner’s Dictionary © Cambridge University Press)