(~s, buckling, ~d)
1.
A ~ is a piece of metal or plastic attached to one end of a belt or strap, which is used to fasten it.
He wore a belt with a large brass ~.
N-COUNT
2.
When you ~ a belt or strap, you fasten it.
A door slammed in the house and a man came out buckling his belt.
VERB: V n
3.
If an object ~s or if something ~s it, it becomes bent as a result of very great heat or force.
The door was beginning to ~ from the intense heat...
A freak wave had ~d the deck.
VERB: V, V n
4.
If your legs or knees ~, they bend because they have become very weak or tired.
Mcanally’s knees ~d and he crumpled down onto the floor...
VERB: V