Definitions from Wiktionary ( )

▸ noun:  One who grinds something, such as the teeth.
▸ noun:  (anatomy) A molar.
▸ noun:  (slang) Any tooth.
▸ noun:  Any of various machines or devices that grind things, such as by grinding them down or grinding them up.
▸ noun:  Any of various power tools with a spinning abrasive disc, used for smoothing, shaping, or deburring materials, usually metal.
▸ noun:  A grinding machine: any of various machine tools for grinding (either heavy or light grinding, but precise either way).
▸ noun:  Any of various pieces of heavy equipment for grinding.
▸ noun:  (Northern US, especially Connecticut, Vermont) A submarine sandwich, a sandwich made on a long, cylindrical roll.
▸ noun:  (Pennsylvania) In particular, a submarine sandwich (hoagie) that is toasted or baked and typically does not contain lettuce.
▸ noun:  A kitchen gadget for processing coffee, herbs etc. into small or powdered pieces.
▸ noun:  The restless flycatcher (Myiagra inquieta) of Australia, which makes a noise like a scissors grinder.
▸ noun:  (music, slang) A fan or performer of grindcore music.
▸ noun:  (slang) A biohacker who uses cybernetic implants or biochemicals to enhance or change their own body.
▸ noun:  (slang, dated) A student who studies hard; a swot.
▸ noun:  (slang, dated) A person who coaches students for an upcoming examination.
▸ noun:  (ice hockey, slang) A hard-working, physical player with limited offensive ability.
▸ noun:  (lawyer slang) A low-ranking attorney with no clients who works very hard.
▸ noun:  (US, military, slang) An outdoor space for drills and parades.
▸ noun:  (radio, informal) Atmospheric interference producing a roaring background noise.
▸ noun:  A surname.

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