磨快 Traditional form: 磨快 Pinyin (reading): mókuài Definitions: to sharpen to grind (knife blades) Characters: 磨 - millstone; to grind, to polish, to rub, to wear out 快 - speedy, rapid, quick; soon Traditional characters: 磨 - millstone; to grind, to polish, to rub, to wear out 快 - speedy, rapid, quick; soon