/ Dictionary / Index S second base: Meaning and Definition of Find definitions for: sec'ond base' Pronunciation: [key] — Baseball. Baseball. the second in order of the bases from home plate. the position of the player covering the area of the infield between second and first bases. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. second banana second baseman Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language