a tropical animal like an insect, with a curving tail and a poisonoussting.——朗文当代大辞典

An arachnid of any of the genera (Scorpio, Buthus, Androctonus, etc.) forming the group Scorpionidæ, having a pair of large nippers and a general resemblance to a miniature lobster; they inhabit tropical and warm temperate countries in both hemispheres. The intense pain caused by the sting of the scorpion (situated at the point of the tail) is proverbial.——牛津当代大辞典  @en