meaning of grinder
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.
4. a machine tool that polishes metal
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