Definitions

1. verb

to release or undo the fastening of something, especially a belt, strap, or buckle.

“She began to unbuckle her seatbelt as the car approached the stop sign.”

2. verb

to remove or undo something that is securely fastened or attached.

“He tried to unbuckle the stubborn lock on the old trunk.”

3. noun

an act of releasing or undoing the fastening of something.

“The process of unbuckling the straps took several minutes.”