紐 niǔ knot, button Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: button All meanings 3 niǔ 3 button 1nu 1turn 1 1 sentence for 紐 (niǔ — button) 这个保险箱的开启需要旋转一个密码纽。 zhè gè bǎoxiǎnxiāng de kāiqǐ xūyào xuánzhuǎn yī gè mìmǎ niǔ. Opening this safe requires turning a combination knob. Source: Dong Chinese Dictionary