buckle

Definitions

A flat, typically rectangular frame with a hinged pin, used for fastening a belt or strap.

To bend, warp, or collapse under pressure or heat.

To fasten or secure something with a buckle.

Examples

Make sure to buckle your seatbelt before the car starts moving.

The intense heat caused the metal beams of the bridge to buckle.

He had to buckle down and study hard to pass his final exams.

Synonyms

collapse bend warp twist crumple yield give

Antonyms

straighten stiffen unfasten release detach reinforce support