tooth

noun (plural teeth /tēTH/)

• 1each of a set of hard, bony enamel-coated structures in the jaws of most vertebrates, used for biting and chewing.
• a hard, pointed structure in invertebrate animals, typically functioning in the mechanical breakdown of food.
• (teeth) genuine force or effectiveness of a body or in a law or agreement:the Charter would be fine if it had teeth and could be enforced

• 2a projecting part on a tool or other instrument, especially one of a series that function or engage together, such as a cog on a gearwheel or a point on a saw or comb.
• a projecting part on an animal or plant, especially one of a jagged or dentate row on the margin of a leaf or shell.

• 3an appetite or liking for a particular thing:what a tooth for fruit a monkey has!

• 4roughness given to a surface to allow color or glue to adhere.