Rubble, wreckage, scattered remains of something destroyed.
Large rock fragments left by a melting glacier etc.
Litter and discarded refuse.
The ruins of a broken-down structure.
The area of a slaughterhouse where carcasses unfit for human consumption or other purposes are rendered down to produce useful materials such as glue.
A (notional) place to send a person or object that is spent beyond all reasonable use.