plural of commanding officer

The officer in command of, and typically having ultimate authority over, a military unit.

plural of jack-in-office

(derogatory) A self-important but minor official.

(law) A public officer authorized to hear and decide cases in a court of law. / (law) A huissier de justice, a process server and officer of the court in several European countries.

(dated) copper wire with a strong but light insulation, used in wiring houses, etc.

plural of office-goer

One who works in an office.

(idiomatic, colloquial) A police officer.

plural of executive officer