from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To crush, pulverize, or reduce to powder by friction, especially by rubbing between two hard surfaces: grind wheat into flour.
  • transitive v. To shape, sharpen, or refine with friction: grind a lens.
  • transitive v. To rub (two surfaces) together harshly; gnash: grind the teeth.
  • transitive v. To bear down on harshly; crush.
  • transitive v. To oppress or weaken gradually: "Laws grind the poor, and rich men rule the law” ( Oliver Goldsmith).
  • transitive v. To operate by turning a crank: ground a hurdy-gurdy.
  • transitive v. To produce or process by turning a crank: grinding a pound of beef.
  • transitive v. To produce mechanically or without inspiration: The factory grinds out a uniform product.
  • transitive v. To instill or teach by persistent repetition: ground the truth into their heads.
  • intransitive v. To perform the operation of grinding something.
  • intransitive v. To become crushed, pulverized, or powdered by friction.
  • intransitive v. To move with noisy friction; grate: a train grinding along rusty rails.
  • intransitive v. Informal To devote oneself to study or work: grinding for a test; grinding away at housework.
  • intransitive v. Slang To rotate the pelvis erotically, as in the manner of a stripteaser.
  • n. The act of grinding.
  • n. A crunching or grinding noise.
  • n. A specific grade or degree of pulverization, as of coffee beans: drip grind.
  • n. Informal A laborious task, routine, or study: the daily grind.
  • n. Informal A student who works or studies excessively.
  • n. Slang An erotic rotation of the pelvis.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To make smaller by breaking with a device.
  • v. To cause to rub together.
  • v. To rotate the hips suggestively.
  • v. To remove material by rubbing with an abrasive surface.
  • v. To slide the flat portion of a skateboard or snowboard across an obstacle such as a railing.
  • v. To repeat a task in order to gain levels or items.
  • v. To eat.
  • n. The act of reducing to powder, or of sharpening, by friction.
  • n. A specific degree of pulverization of coffee beans.
  • n. A tedious task.
  • n. A grinding trick on a skateboard or snowboard.
  • n. One who studies hard; a swot.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of reducing to powder, or of sharpening, by friction.
  • n. Any severe continuous work or occupation; esp., hard and uninteresting study.
  • n. A student that studies hard; a dig; a wonk.
  • intransitive v. To perform the operation of grinding something; to turn the millstones.
  • intransitive v. To become ground or pulverized by friction.
  • intransitive v. To become polished or sharpened by friction
  • intransitive v. To move with much difficulty or friction; to grate.
  • intransitive v. To perform hard and distasteful service; to drudge; to study hard, as for an examination.
  • transitive v. To reduce to powder by friction, as in a mill, or with the teeth; to crush into small fragments; to produce as by the action of millstones.
  • transitive v. To wear down, polish, or sharpen, by friction; to make smooth, sharp, or pointed; to whet, as a knife or drill; to rub against one another, as teeth, etc.
  • transitive v. To oppress by severe exactions; to harass.
  • transitive v. To study hard for examination; -- commonly used with away.

from The Century Dictionary and Cyclopedia

  • To break and reduce to fine particles by pounding, crushing, or rubbing, as in a mill or a mortar, or with the teeth; bray; triturate: as, to grind corn.
  • To produce by grinding, or by action comparable to that of grinding: as, to grind flour; to grind out a tune on an organ.
  • To wear down, smooth, or sharpen by friction; give a smooth surface, edge, or point to, as by friction of a wheel or revolving stone; whet.
  • To grate or rub harshly together; grit.
  • To set in motion or operate, as by turning a crank: as, to grind a coffee-mill; to grind a hand-organ.
  • To oppress by severe exactions; afflict with hardship or cruelty.
  • To satirize severely; make a jest of.
  • To teach in a dull, laborious manner.
  • To study or learn by close application or hard work; master laboriously: as, to grind out a problem.
  • To perform the act or operation of grinding, grating, or harshly rubbing; turn a mill, a grindstone, or some similar machine.
  • To be grated or rubbed together: as, the jaws grind.
  • To be ground or pulverized by pounding or rubbing: as, dry corn grinds fine.
  • To be polished or sharpened by friction: as, marble or steel grinds readily.
  • To perform tedious and distasteful work; drudge; especially, to study hard; prepare for examination by close application.
  • n. The act of grinding, or turning a mill, a grindstone, etc.
  • n. The sound of grinding or grating.
  • n. Hard or tedious and distasteful work; constant employment; especially, in college slang, laborious study; close application to study.
  • n. One who studies laboriously or with dogged application.
  • n. A piece of satire; a jest.
  • n. A satirist; an inveterate jester.
  • n. Nautical, a kink, half-turn, or twist in a rope.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. reduce to small pieces or particles by pounding or abrading
  • n. an insignificant student who is ridiculed as being affected or boringly studious
  • v. press or grind with a crushing noise
  • n. the grade of particle fineness to which a substance is ground
  • v. shape or form by grinding
  • v. created by grinding
  • n. hard monotonous routine work
  • n. the act of grinding to a powder or dust
  • v. make a grating or grinding sound by rubbing together
  • v. work hard
  • v. dance by rotating the pelvis in an erotically suggestive way, often while in contact with one's partner such that the dancers' legs are interlaced


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English grinden, from Old English grindan; see ghrendh- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Old English grindan, cognate with Dutch grind 'gravel, shingel'.



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  • A slang synonym for fuck. As in, when crashing gears, 'another grind like that and we'll have to get engaged'.

    July 31, 2009

  • working hard, focusing. "on my daily grind"

    June 12, 2007