/ Dictionary / Index G grind rock: Meaning and Definition of Find definitions for: grind' rock" Pronunciation: [key] — Southern U.S. Southern U.S. whetstone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grindle grindstone Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language