钩环 Traditional form: 鉤環 Pinyin (reading): gōuhuán Definitions: shackle (U-shaped link) Characters: 钩 - hook, barb, sickle; to hook, to link 环 - bracelet, ring; to surround, to loop Traditional characters: 鉤 - hook, barb, sickle; to hook, to link 環 - bracelet, ring; to surround, to loop