lemming
noun [ C ] uk/ˈlem.ɪŋ/ us/ˈlem.ɪŋ/
旅鼠
an animal that looks like a large mouse and lives in cold northern areas. Lemmings migrate (= move from one place to another) in large groups and are often, but wrongly, thought to jump off cliffs together.
Idiom
like lemmingsidiom 一窝蜂地
in a silly way, without thinking, and in large numbers
People rushed like lemmings to invest in the company. 人们一窝蜂地把钱投进了该公司。