grind (grīnd) v. ground (ground), grind·ing, grinds v.tr. 1. a. To reduce to small bits or crush to a fine powder: grind wheat into flour; grind coffee beans. b. To shape, sharpen, or refine with friction: grind scissors to a fine edge; grind lenses for eyeglasses. 2. To rub (two surfaces) together harshly; gnash: grind one's teeth. 3. To bear down on ...
