封皮 Traditional form: 封皮 Pinyin (reading): fēngpí Definitions: outer skin envelope cover (legal) seal Characters: 封 - envelope, letter; to confer, to grant; feudal 皮 - skin, hide, fur, feathers Traditional characters: 封 - envelope, letter; to confer, to grant; feudal 皮 - skin, hide, fur, feathers