信封 Traditional form: 信封 Pinyin (reading): xìnfēng Definitions: envelope CL:個/个 (gè) Characters: 信 - to trust, to believe; letter, sign 封 - envelope, letter; to confer, to grant; feudal Traditional characters: 信 - to trust, to believe; letter, sign 封 - envelope, letter; to confer, to grant; feudal