Definitions for "Cotter pin"
Keywords:  bent, rivet, pin, fasten, staple
A small metal pin used to keep other parts from changing their position, such as to keep a nut from turning or a clevis pin from falling out.
a cotter consisting of a split pin that is secured (after passing through a hole) by splitting the ends apart
a metal fastener that is bent after installation, similar to a staple or rivet