Fr. Indochine, former federation of states, SE Asia. It comprised the French colony of Cochin China and the French protectorates of Tonkin, Annam, Laos, and Cambodia (Cochin China, Tonkin, and Annam were later united to form Vietnam).
Now generally agreed to be one of the aus-troasiatic languages, Vietnamese is so different from its relatives that quite contradictory views on its origin have been expressed. It is the official language of Vietnam.
Irregular soldier fighting in a small, unofficial unit, typically against an established or occupying power, and engaging in sabotage, ambush, and the like, rather than pitched battles against an opposing army.