/ Dictionary / Index R rocket gun: Meaning and Definition of Find definitions for: rock'et gun" Pronunciation: [key] any weapon that uses a rocket as a projectile, as a rocket launcher or bazooka. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rocket engine rocket launcher Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language