郵件 yóujiàn HSK3 mail Definitions Defs Origin Strokes Stroke Words Sentences Sents 邮 郵 yóu noun postal (bound form) relating to the post office or postal service件 jiàn noun document (bound form) a document, letter, or piece of correspondence; used in words like 文件 wénjiàn or 信件 xìnjiàn