One of the hard, bony structures in the mouth used for biting and chewing. She lost a tooth while eating a hard candy.
A projection resembling a tooth in shape or function, such as on a gear or saw. The saw's tooth was damaged, making it difficult to cut through the wood.
A fondness or preference for something, often used in the phrase 'sweet tooth' to describe a liking for sweets. He has a sweet tooth and can't resist chocolate desserts.
Force, power, or effectiveness, especially of a law or policy. Critics say the new regulation lacks teeth and will not deter violators.