Cremaster

The word cremaster can mean more than one thing:

In humans, the cremaster muscle is a muscle that is part of genital anatomy.
In the pupae of certain species of butterfly, the cremaster is a hook-shaped protuberance from the rear of the chrysalis casing, by which the caterpillar fixes itself to the pad of silk it has cemented to the underside of a perch.
The Cremaster Cycle is the name of a sequence of five films by Matthew Barney, entitled Cremaster 1 to Cremaster 5.