琅函 lánghán bookcase Definitions Defs Origin Strokes Stroke Words Sentences Sents lánghán bookcase 琅 láng [jade-like stone] (bound form) a kind of stone that looks like jade; a gem函 hán case (bound form) a small box, case, or envelope; a protective cover for books or objectslánghán your letter · Taoist scriptures 琅 láng [jade-like stone] (bound form) a kind of stone that looks like jade; a gem函 hán noun letter (literary or formal) a letter; correspondence; official document