/ Dictionary / Index R rescue grass: Meaning and Definition of Find definitions for: res'cue grass" Pronunciation: [key] a grass, Bromus unioloides (or B. catharticus), of tropical America, having clusters of flattened spikelets, grown for forage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rescue rescue mission Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language