柯林斯詞典stool pigeon 1. N a living or dummy pigeon used to decoy others 誘捕用的鴿子 返回 stool pigeon劍橋詞典a person , often a criminal , who gives information in secret to the police so that they can catch other criminals （秘密曏警方提供情報的）線人，坐探（通常爲(wèi)罪犯） 返回 stool pigeon