/ Dictionary / Index F first run: Meaning and Definition of Find definitions for: first' run' Pronunciation: [key] — Motion Pictures. Motion Pictures. the initial exhibition period for a film. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. First Republic first sergeant Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language