笔友 Traditional form: 筆友 Pinyin (reading): bǐyǒu Definitions: pen pal Characters: 笔 - pen, pencil, writing brush; to compose, to write; Hanzi stroke 友 - friend, companion; fraternity Traditional characters: 筆 - pen, pencil, writing brush; to compose, to write; Hanzi stroke 友 - friend, companion; fraternity