Lao /laʊ/noun 2adjective 1forms 1 noun2 •A Tai ethnic group native to Southeast Asia. •The official language of Laos that is closely related to Thai. adjective1 •Of, from, or pertaining to Laos, the Lao people or their Kra-Dai Lao language.A statement from the official Lao News Agency (KPL) Friday reported that “the consumption of tainted alcoholic beverages” was the suspected cause of the deaths. — 2024 formsLaos