Search the dictionary A Chinese word or character, or English Draw a character Search 5 entries. bìdìng 必定 to be bound to bǐdìng 吡啶 pyridine C5H5N (loanword) bídīng 鼻钉 nose stud bídīng 鼻釘 nose stud píngfāngfǎnbǐdìnglǜ 平方反比定律 inverse-square law (physics)