/ Dictionary / Index S second floor: Meaning and Definition of Find definitions for: sec'ond floor' Pronunciation: [key] the floor or story above the ground floor. (in Britain and elsewhere outside the U.S.) the second story completely above ground level. Cf.Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. second fiddle second-foot Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language