One who grinds something, such as the teeth. / (anatomy) A molar. / (slang) Any tooth. / A power tool with a spinning abrasive disc, used for grinding, smoothing, and shaping materials, usually metal.

A device for pulverizing or powdering coffee beans so they can be brewed as coffee. (Technically many of the machines tear the coffee beans).

plural of grinder

The person who is in charge, rather than a lackey or representative.

plural of gooseberry-grinder

(archaic, British slang) The buttocks.

A genre of death metal music or hardcore punk, incorporating aggressive guitar riffs, extremely rapid drumming and loud, undecipherable screaming.