- (countable) A tooth is a hard, white thing in your mouth. You use your teeth to chew food.
- (countable) A tooth is a sharp point sticking out of something and forms a row of sharp objects for cutting.
- (countable) A tooth is a rounded point on a gear that is used to transmit or receive force and motion to other gears.
A tooth (in a row of teeth) on a hand saw
These gears have many teeth
|Parts of the head (edit)|