lemming
Refers to the small rodent known for mass migrations. Usually written in kana.
See also: レミング
たびねずみは集団で移動することで知られている。
Lemmings are known for migrating in groups.
Compound of 旅 (tabi, 'journey') and 鼠 (nezumi, 'mouse/rat'), literally 'traveling mouse', referring to the lemming's migratory behavior. The exact historical origin is uncertain.