Jack the Ripper
- an unidentified 19th-century English murderer. In 1888 at least six prostitutes were brutally killed in the East End of London, the bodies being mutilated in a way that indicated a knowledge of anatomy. The authorities received taunting notes from a person calling himself Jack the Ripper and claiming to be the murderer, but the cases remain unsolved.“肢解者”杰克（19世纪的不明身份杀人犯, 1888年至少六个妓女在伦敦东区被残杀, 被肢解的尸体说明案犯熟悉人体解剖知识;当局曾收到一个自称“肢解者”杰克的人的奚落信, 声称是案中凶手, 但案件一直悬而未破）。