/ Dictionary / Index R ribgrass: Meaning and Definition of Find definitions for: rib•grass Pronunciation: (rib'gras", -gräs"), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ribgrass (Thesaurus) rib eye rib-knit Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language