buckle

Meanings

• fastener that fastens together two ends of a belt or strap; often has loose prong
• a shape distorted by twisting or folding
• fasten with a buckle or buckles
• fold or collapse
  • "His knees buckled"
• bend out of shape, as under pressure or from heat
  • "The highway buckled during the heat wave"

Synonyms

clasp, crumple, heave, warp