/ Dictionary / Index R racehorse: Meaning and Definition of Find definitions for: race•horse Pronunciation: (r?s'hrs"), [key] ? n. a horse bred or kept for racing, esp. in flat races or steeplechases. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. See also: racehorse (Thesaurus) racecourse racemate Related Content Daily Word Quiz: abscond Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language