/ Dictionary / Index G grape sugar: Meaning and Definition of Find definitions for: grape' sug"ar Pronunciation: [key] dextrose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grapestone grapevine Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language