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One who grinds something, such as the teeth.
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(anatomical) A molar.
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A power tool with a spinning abrasive disc, used for grinding, smoothing, and shaping materials, usually metal.
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A sandwich made on a long, cylindrical roll.
example
I am going to the deli to get a grinder for lunch.
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A kitchen gadget for processing coffee, herbs etc. into small or powdered pieces
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The restless flycatcher (Myiagra inquieta) of Australia, which makes a noise like a scissors grinder.
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A fan or performer of grindcore music.
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A biohacker who uses cybernetic implants or biochemicals to enhance or change their own body.
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A student who studies hard; a swot.
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A person who coaches students for an upcoming examination.
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(ice hockey slang) A hard-working, physical player with limited offensive ability.
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A low-ranking attorney with no clients who works very hard.
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An outdoor space for drills and parades.