The governmental department charged with the regulation and control of the affairs of a community, now chiefly the department established to maintain order, enforce the law, and prevent and detect crime. A body of persons making up such a department, trained in methods of law enforcement and crime prevention and detection and authorized to maintain the peace, safety, and order of the community. Police officers considered as a group. A body of persons having similar organization and function: campus police. Also called police force. Regulation and control of the affairs of a community, especially with respect to maintenance of order, law, health, morals, safety, and other matters affecting the public welfare. Informal A group that admonishes, cautions, or reminds: grammar police; fashion police. The cleaning of a military base or other military area: Police of the barracks must be completed before inspection. The soldiers assigned to a specified maintenance duty. To regulate, control, or keep in order with or as if with a law enforcement agency. To make (a military area, for example) neat in appearance: policed the barracks.