棱 ㄌㄥ ˊ léng 角 ㄐㄧㄠ ˇ jiǎo 稜 ㄌㄥ ˊ léng 角 ㄐㄧㄠ ˇ jiǎo edge and corner protrusion sharpness (of a protrusion) craggy ridge corner