/ Dictionary / Index H horsepox: Meaning and Definition of Find definitions for: horse•pox Pronunciation: (hôrs'poks"), [key] — n. Vet. Pathol. a disease in horses caused by a virus and characterized by eruptions in the mouth and on the skin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. horsepower-hour horse race Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language