孔洞 Save Sign in to save words kǒngdòng ㄎㄨㄥˇ ㄉㄨㄥˋ small hole in an object Character by character 孔(kǒng)surname Kong 洞(dòng)cave Other words read kǒngdòng kongdong with other tones 空洞 A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0