Meaning of “police” - Learner’s Dictionary

police

noun [ plural ] us uk /pəˈliːs/
Extra Examples
Armed police stood guard outside the house.The police were baffled by his disappearance.A police helicopter was hovering overhead.The police recovered a large amount of stolen property.The police have surrounded the building.

A2 the official organization that makes people obey the law and that protects people and places against crime, or the people who work for this organization:

I heard a gun shot and decided to call the police.
A 30-year-old taxi driver is being interviewed by police.
a police helicopter
a police investigation

(Definition of “police noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)