/ Dictionary / Index R roscoe: Meaning and Definition of Find definitions for: ros•coe Pronunciation: (ros'kō), [key] — n. Older Slang. a revolver or pistol. Ros•coe Pronunciation: (ros'kō), [key] — n. a male given name: from Germanic words meaning “swift” and “horse.” Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Roscius roscoelite Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language