勒索 Traditional form: 勒索 Pinyin (reading): lèsuǒ Definitions: to blackmail to extort Characters: 勒 - to strangle; to tighten 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire Traditional characters: 勒 - to strangle; to tighten 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire