括線 Save Sign in to save words Simplified: 括线 kuòxiàn ㄎㄨㄛˋ ㄒㄧㄢˋ vinculum math. Character by character 括(kuò)tie up 線(xiàn)thread A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0