/ Dictionary / Index R rockoon: Meaning and Definition of Find definitions for: rock•oon Pronunciation: (rok'n, ro-kn'), [key] — n. a rocket launched from a balloon at a high altitude. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rock oil rock pigeon Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language