fasten /ˈfɑ:sn/ vt.& vi. 栓，扣，系(使固定在一起)：He fastened (up) his coat. 他把大衣扣上。 Fasten your shoes, the laces are undone. 把你的鞋系好，鞋带松了。The door will not fasten. 这门插不上。The dress fastens at the back. 这衣服扣子在背上。