grinder

1. One who grinds something, such as the teeth. · scissors grinder (one who sharpens scissors)
2. A molar.
3. Any tooth. (slang)
4. Any of various power tools with a spinning abrasive disc, used for smoothing, shaping, or deburring materials, usually metal.
5. A grinding machine: any of various machine tools for grinding (either heavy or light grinding, but precise either way).
6. Any of various pieces of heavy equipment for grinding.
7. A sandwich made on a long, cylindrical roll. · I am going to the deli to get a grinder for lunch.
8. In particular, a submarine sandwich (hoagie) that is toasted or baked and typically does not contain lettuce.

Plural grinders