The term originaged with the London police force back in the 1800's. The police officers, or constables, would walk their beat all day (or night) and return to their station at the end of their shift. At the station was a large ledger or log book. Before leaving, the officers would write information about their activities during the shift, and sign their name, followed by the abbreviation, "COP", Constable on Patrol
Cop
Common Operating Picture.
Coefficiency of performance.
Combat Outpost
Common Operating Picture
Government Issue.
The letters in "cop" stand for "Constable on Patrol." It is a term used to refer to a police officer, especially in the United States.
Government issue
situation comedy
government issue
Morris Garages
It was originally the abbreviation for Detective Comics.