齒孔 Save Sign in to save words Simplified: 齿孔 chǐkǒng ㄔˇ ㄎㄨㄥˇ perforations (on a postage stamp) Character by character 齒(chǐ)tooth 孔(kǒng)surname Kong A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0