/ Dictionary / Index R rifle grenade: Meaning and Definition of Find definitions for: ri'fle grenade" Pronunciation: [key] — Mil. Mil. a grenade designed to be fired from a grenade launcher attached to the muzzle of a rifle or carbine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rifled slug rifleman Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language