Breadcrumb Home > Dictionary > Index L Lao: Meaning and Definition of Find definitions for: Lao Pronunciation: (lou), [key] — pl. Laos Lao a member of a people of Laos and northern Thailand. the language of these people, belonging to the Thai group of languages. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lao (Thesaurus) Lanzhou Laoag ✖ Related Content Daily Word Quiz: glissade Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language