button1/ˋbʌtṇ; ˈbʌtn/n [C] 1 a small round thing on a shirt, coat etc that you put through a hole to fasten the shirt etc 纽扣: a jacket with gold buttons 钉着金纽扣的夹克Sam undid (=unfastened) his buttons. 萨姆解开纽扣。do up a button BrE (=fasten a button) 【英】扣上纽扣2 a small part on a machine that you press to make it start, stop etc 按钮: push/press a button Just press the ‘on’ button. 就按一下“开”这个按钮。You can close the roof at the touch of a button . 你按一下按钮﹐车顶就会合上。3 AmE a small piece of metal or plastic with a message or picture on it that you fasten to your clothes [ badge BrE 【英】] 【美】〔印有文字或图画的〕金属[塑料]小徽章
button2 also 又作 button upv [I,T] to fasten something with buttons, or to be fastened with buttons 用纽扣扣住; 扣上…的纽扣see box at见 FASTEN 方框