river in SE Asia, flowing from Tibet through SW China & the Indochinese peninsula into the South China Sea: c. 2,600 mi (4,184 km)
See Mekong in American Heritage Dictionary 4
A river of southeast Asia flowing about 4,500 km (2,800 mi) from southeast China to the South China Sea through a vast delta in southern Vietnam. The delta, a major rice-growing area, was the scene of heavy fighting during the Vietnam War.