凹洞 Save Create a free account to save words āodòng ㄠ ㄉㄨㄥˋ 男 女 cavity pit Character by character 凹(āo)concave 洞(dòng)cave Sign up for a free account to save words and review them A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0