Mekong

geographical name

Me·​kong ˈmā-ˈkȯŋ 

-ˈkäŋ;

ˈmā-ˌkȯŋ,

-ˌkäŋ

river 2600 miles (4184 kilometers) long in southeastern Asia flowing south and southeast from China (from the province of Qinghai through southeastern Tibet and western Yunnan), along the boundary between Laos and Myanmar (Burma) and a large part of the boundary between Laos and Thailand, through Cambodia, and emptying into the South China Sea in southern Vietnam