From WordNet (r) 3.0 (2006) [wn]:
Vietnam
n 1: a communist state in Indochina on the South China Sea;
achieved independence from France in 1945 [syn: Vietnam,
Socialist Republic of Vietnam, Viet Nam, Annam]
2: a prolonged war (1954-1975) between the communist armies of
North Vietnam who were supported by the Chinese and the
armies of South Vietnam who were supported by the United
States [syn: Vietnam War, Vietnam]