/ Dictionary / Index L lessor: Meaning and Definition of Find definitions for: les•sor Pronunciation: (les'ôr, le-sôr'), [key] — n. a person, group, etc., who grants a lease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lessor (Thesaurus) lesson lest 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