/ Dictionary / Index S second banana: Meaning and Definition of Find definitions for: sec'ond banan'a Pronunciation: [key] — Informal. Informal. a comic who supports the leading comedian, often as a straight man, esp. in burlesque or vaudeville. any person who plays a secondary role or serves in a subsidiary capacity. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Second Balkan War second base Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language