/ Dictionary / Index S single-barrel: Meaning and Definition of Find definitions for: sin•gle-bar•rel Pronunciation: (sing'gul-bar'ul), [key] — n. a gun having one barrel, esp. a shotgun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. single-action single-blind Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language