/ Dictionary / Index O one-horse: Meaning and Definition of Find definitions for: one-horse Pronunciation: (wun'hôrs', -hōrs'), [key] — adj. using or having only a single horse: a one-horse carriage. small and unimportant; limited: a one-horse town. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: one-horse (Thesaurus) one-handed 101 Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language