止痛 Traditional form: 止痛 Pinyin (reading): zhǐtòng Definitions: to relieve pain to stop pain analgesic Characters: 止 - to stop, to halt; to detain; to desist 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly Traditional characters: 止 - to stop, to halt; to detain; to desist 痛 - ache, pain; bitterness, sorrow; deeply, thoroughly