/ Dictionary / Index F first-string: Meaning and Definition of Find definitions for: first-string Pronunciation: (fûrst'string'), [key] — adj. composed of regular members, participants, etc. (distinguished from substitute): the first-string team. foremost; main: the first-string critics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: first-string (Thesaurus) first strike first-termer Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language