/ Dictionary / Index H harness horse: Meaning and Definition of Find definitions for: har'ness horse" Pronunciation: [key] a horse used for pulling vehicles. a horse used in harness racing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. harness hitch harness race Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language