English
to go through; to penetrate; passed through, (same as 洞) a cave; a hole
康熙字典
【午集下】【穴字部】䆚 ·康熙筆画：11 ·部外筆画：6
《廣韻》徒紅切《集韻》徒東切，? 音同。通也。 又《集韻》杜孔切，音動。地通穴也。