/ Dictionary / Index R running start: Meaning and Definition of Find definitions for: run'ning start' Pronunciation: [key] a start, as in the hop, step, and jump or the running broad jump, in which a contestant begins moving before reaching the starting or take-off point. an initial advantage in undertaking something; a head start: His background gave him a running start in business. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. running room running stitch Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language