Breadcrumb Home > Dictionary > Index L lav: Meaning and Definition of Find definitions for: lav Pronunciation: (lav), [key] — n. Informal. lavatory. LAV Pronunciation: [key] lymphadenopathy-associated virus. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lav (Thesaurus) Lauzon lava ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language