Patrolman (noun)

A police officer assigned to patrol a specified area.

Origin:

Early 20th century; from patrol + -man.

Examples:

1. The patrolman checked his notes and headed out on his route.
2. The patrolman stopped to assist a stranded motorist.
3. The patrolman's job is to ensure the safety of the community.
4. The patrolman pulled out his notebook and began to take notes.
5. The patrolman responded to a call of a suspicious person in the neighborhood.