/ Dictionary / Index S second baseman: Meaning and Definition of Find definitions for: sec'ond base'man Pronunciation: [key] — Baseball. Baseball. the player whose position is second base. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. second base second best 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