Country between Thailand and Vietnam (4)

I believe the answer is:

laos

(Other definitions for laos that I've seen before include "Mountainous state in southeastern Asia" , "Landlocked south-east Asian country" , "Asian country, capital Vientiane" , "SE Asian country" , "Landlocked state in southeastern Asia" .)

I've seen this clue in the USA Today, the LA Times and The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.