/ Dictionary / Index L lead sheet: Meaning and Definition of Find definitions for: lead' sheet" Pronunciation: (lēd), [key] a copy of a song containing the melody line, sometimes along with the lyrics and the notations indicating the harmonic structure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lead screw leadsman 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