policeman
/ˈpɒlɪsˌmæn/Definitions
1. noun
A man employed to maintain law and order, especially one who is authorized to make arrests and enforce laws.
“The policeman on the corner helped me when my car broke down.”
2. noun
A man who is responsible for the administration of the police force, typically a high-ranking official.
“The chief policeman was responsible for the department’s annual budget.”