/ Dictionary / Index L leading man: Meaning and Definition of Find definitions for: lead'ing man' Pronunciation: (lē'ding), [key] an actor who plays the principal male role in a motion picture or play. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leading light leading mark Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language