(person) by pukesick Mon Mar 27 2000 at 12:26:02
1. Policeman; any representation of the law. 2. Prison keeper, warden, or other prison official. "Lay zex (be ready to warn me) for the man, I'm gonna cop a heel on (beat) that new fink (informer) in the shop."

- american underworld dictionary - 1950
I like it!