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To crush, pulverize, or reduce to powder by friction, especially by rubbing between two hard surfaces: grind wheat into flour.
(verb-transitive)
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To shape, sharpen, or refine with friction: grind a lens.
(verb-transitive)
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To rub (two surfaces) together harshly; gnash: grind the teeth.
(verb-transitive)
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To bear down on harshly; crush.
(verb-transitive)
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To oppress or weaken gradually: "Laws grind the poor, and rich men rule the law” ( Oliver Goldsmith).
(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.