1Attributive Designating a radical left-wing student movement in Japan, particularly active during the 1950s and 1960s.
2A member of a Japanese Zengakuren group.
1950s; earliest use found in The New York Times. From Japanese Zengakuren, acronym from the elements represented by three kanji in ZenNihon Gakusei Jichikai Sō Rengō, lit. ‘All-Japan Federation of Student Self-Government Associations’.