buckle

1. N-COUNT A buckle is a piece of metal or plastic attached to one end of a belt or strap, which is used to fasten it. (皮帶等的) 帶釦

He wore a belt with a large brass buckle. 他系了一根有很大黃銅釦的皮帶。

2. V-T When you buckle a belt or strap, you fasten it. 釦緊

A door slammed in the house and a man came out buckling his belt. 屋子裡門砰地關上了，一名男子一邊釦著皮帶一邊走了出來。

3. V-T/V-I If an object buckles or if something buckles it, it becomes bent as a result of very great heat or force. 使彎曲; (因受熱或受壓而) 變彎

The door was beginning to buckle from the intense heat. 由於高溫，門正開始變彎。

4. V-I If your legs or knees buckle, they bend because they have become very weak or tired. (腿、膝) 發軟彎曲

Mcanally's knees buckled and he crumpled down onto the floor. 麥卡納利雙膝發軟彎了下去，癱倒在地板上。