The Collaborative International Dictionary of English v.0.48:

Laos \Laos\ prop. n.
   a country in Southeast Asia.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

Laos
    n 1: a mountainous landlocked communist state in southeastern
         Asia; achieved independence from France in 1949 [syn:
         Laos, Lao People's Democratic Republic]