/ Dictionary / Index G grenade launcher: Meaning and Definition of Find definitions for: grenade' launch"er Pronunciation: [key] — Mil. Mil. a device attached to the muzzle of a rifle, permitting the firing of rifle grenades. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grenade grenadier Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language