grinder

One who grinds something, such as the teeth.

A molar.

Any tooth.

Any of various power tools with a spinning abrasive disc, used for smoothing, shaping, or deburring materials, usually metal.

A grinding machine: any of various machine tools for grinding (either heavy or light grinding, but precise either way).

Any of various pieces of heavy equipment for grinding.

A sandwich made on a long, cylindrical roll.

In particular, a submarine sandwich (hoagie) that is toasted or baked and typically does not contain lettuce.

A kitchen gadget for processing coffee, herbs etc. into small or powdered pieces.

The restless flycatcher (Myiagra inquieta) of Australia, which makes a noise like a scissors grinder.