腘绳肌 Traditional form: 膕繩肌 Pinyin (reading): guóshéngjī Definitions: hamstring (anatomy) Characters: 绳 - string, rope, cord; to control 肌 - flesh, skin; muscle, tissue; meat on bones Traditional characters: 膕 - hollow, cavity 繩 - string, rope, cord; to control 肌 - flesh, skin; muscle, tissue; meat on bones