| Noun | 1. | Lao - a member of a Buddhist people inhabiting the area of the Mekong River in Laos and Thailand and speaking the Lao language; related to the Thais Synonyms: Laotian |
| 2. | Lao - the Tai language of a Buddhist people living in the area of the Mekong River in Thailand and Laos | |
| Adj. | 1. | Lao - of or relating to a member of the Buddhist people inhabiting the Mekong river in Laos and Thailand |