definition of
buckle

[1] #1 buckle n. fastener that fastens together two ends of a belt or strap; often has loose prong. wn

[2] #2 buckle v. [clasp] fasten with a buckle or buckles. wn

[3] #3 buckle v. [crumple] fold or collapse; "His knees buckled". wn

[4] #4 buckle v. [heave, warp] bend out of shape, as under pressure or from heat; "The highway buckled during the heat wave". wn

[5] #5 buckle n. [warp] a shape distorted by twisting or folding. wn