凹槽 Save Create a free account to save words āocáo ㄠ ㄘㄠˊ 男 女 recess notch groove fillister Character by character 凹(āo)concave 槽(cáo)groove 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