尿不湿 Traditional form: 尿不濕 Pinyin (reading): niàobùshī Definitions: (coll.) disposable diaper Characters: 尿 - urine; to urinate 不 - no, not, un-; negative prefix 湿 - wet, moist, humid, damp; illness Traditional characters: 尿 - urine; to urinate 不 - no, not, un-; negative prefix 濕 - wet, moist, humid, damp; illness