/ Dictionary / Index L light horse: Meaning and Definition of Find definitions for: light' horse' Pronunciation: [key] cavalry carrying light arms and equipment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. light heavyweight light-horseman Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language