cop
n. countable C1 Advanced Oxford US //ˈkɑp// UK //kˈɒp// cop
n. a common, informal word for a police officer. You use it when talking to friends, but it is usually too casual for official reports.
n. a police officer. Informal in register; widely used in spoken English but generally avoided in formal or academic writing.
The cop stopped the car for speeding.
A local cop gave us directions to the train station after we got lost downtown.
While the official report referred to them as law enforcement officers, the neighborhood residents simply knew them as the local cops who patrolled the park.
Usage
Commonly used in the plural to refer to the police force as a whole.