Definitions from Wiktionary ( )

▸ verb:  (transitive) To reduce to smaller pieces by crushing with lateral motion.
▸ verb:  (transitive) To shape with the force of friction.
▸ verb:  (metalworking) To remove material by rubbing with an abrasive surface.
▸ verb:  (intransitive) To become ground, pulverized, or polished by friction.
▸ verb:  To move with much difficulty or friction; to grate.
▸ verb:  (sports, intransitive) To slide the flat portion of a skateboard or snowboard across an obstacle such as a railing.
▸ verb:  (transitive) To oppress, hold down or weaken.
▸ verb:  (slang, intransitive) To rotate the hips erotically.
▸ verb:  (slang) To dance in a sexually suggestive way with both partners in very close proximity, often pressed against each other.
▸ verb:  (slang) To rub one's body against another's in a sexual way; to frottage.
▸ verb:  (video games) To repeat a task a large number of times in a row to achieve a specific goal.
▸ verb:  (transitive) To operate by turning a crank.
▸ verb:  To produce mechanically and repetitively as if by turning a crank.
▸ verb:  (computing, dated) To automatically format and indent code.
▸ verb:  (slang, Hawaii) To eat.
▸ verb:  To instill through repetitive teaching.
▸ verb:  (intransitive, slang) To work or study hard; to hustle or drudge.
▸ verb:  (transitive, slang) To annoy or irritate (a person); to grind one's gears.
▸ noun:  The act of reducing to powder, or of sharpening, by friction.
▸ noun:  Something that has been reduced to powder, something that has been ground.
▸ noun:  A specific degree of pulverization of coffee beans.
▸ noun:  A tedious and laborious task.
▸ noun:  A grinding trick on a skateboard or snowboard.
▸ noun:  (archaic, slang) One who studies hard.
▸ noun:  (uncountable, slang) Hustle; hard work.
▸ noun:  A traditional communal pilot whale hunt in the Faroe Islands.
▸ noun:  (uncountable, music) Clipping of grindcore (“subgenre of heavy metal”). [A genre of death metal music or hardcore punk, incorporating aggressive guitar riffs, extremely rapid drumming and loud, undecipherable screaming.]

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