noun
Historical term for the French colonial territory in Southeast Asia (1887–1954).
フランス領インドシナはベトナム、ラオス、カンボジアを含んでいた。
French Indochina included Vietnam, Laos, and Cambodia.
Refers to the Indochinese peninsula in general, not specifically the French colonial entity.
From French 'Indochine française', a colonial term combining 'Indo-' (India) and 'Chine' (China).