lemming
/ˈlemɪŋ/noun
1- a small, short-tailed, thickset rodent related to the voles, found in the Arctic tundra旅鼠。
1.1
- Lemmus, Dicrostonyx, and other genera, family Muridae: several species, in particular the Norway lemming (L. lemmus), which is noted for its fluctuating populations and periodic mass migrations.旅鼠属, 环颈旅鼠属及其他属, 鼠科数种, 特指数量波动大且不时迁移的挪威旅鼠。
1.2
- a person who unthinkingly joins a mass movement, especially a headlong rush to destruction跟帮起哄的人（头脑一热投入运动者, 尤指盲目参与破坏的人）：
a seething herd of lemmings on the road.
路上一群狂热的起哄者。
词源
early 18th cent.: from Norwegian and Danish; related to Old Norse lómundr.