Definition of crimp:
easily crumbled; friable; brittle; weak; inconsistent; contradictory
a fastener or a fastening method that secures parts by bending metal around a joint and squeezing it together, often with a tool that adds indentations to capture the parts; a coal broker. [Provincial England]
"the strap was held together by a simple metal crimp."
by bending metal
so that it squeezes around the parts to be fastened; to style hair into a crimp
"he crimped the wire in place."