(Canada, US and historical) A department of local (usually municipal) government responsible for general law enforcement.

(transitive) To enforce the law and keep order among (a group). / (transitive, intransitive, military, slang) To clean up an area. / (transitive, figuratively) To enforce norms or standards upon.

That can be policed.

plural of policer

One who, or that which, polices. / (computing) A software component that enforces a security policy.

simple past tense and past participle of police

An ideology or political practice that favors extensive, especially oppressive, policing.

plural of policing

Monitoring or regulation. / Patrolling by the police. / Maintenance of public order.

present participle of police