One who has a position of authority in a hierarchical organization, especially in military, police or government organizations.

A respectful term of address for an officer, especially a police officer.

One who holds a public office.

An agent or servant imparted with the ability, to some degree, to act on initiative.

(colloquial, military) A commissioned officer.

(transitive) To supply with officers.

(transitive) To command as or like an officer.