grinder

grinder is a Noun

Definition:

[1] One who, or that which, grinds.

[2] One of the double teeth, used to grind or masticate the food; a molar.

[3] The restless flycatcher (Seisura inquieta) of Australia; -- called also restless thrush and volatile thrush. It makes a noise like a scissors grinder, to which the name alludes. Grinder`s asthma, phthisis, or rot (Med.), a lung disease produced by the mechanical irritation of the particles of steel and stone given off in the operation of grinding.