/ Dictionary / Index R running martingale: Meaning and Definition of Find definitions for: run'ning mar'tingale Pronunciation: [key] martingale (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. running light running mate Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language