1. [ noun ] (military,work) any person in the armed services who holds a position of authority or command
Synonyms: military_officer

"an officer is responsible for the lives of his men"

Related terms: serviceman commanding_officer adjutant desk_officer noncommissioned_officer executive_officer chief_of_staff brass_hat inspector_general naval_officer commissioned_officer army_officer warrant_officer military_adviser military
2. [ noun ] (work) someone who is appointed or elected to an office and who holds a position of trust
Synonyms: officeholder

"he is an officer of the court" "the club elected its officers for the coming year"

Related terms: official sergeant_at_arms probation_officer
3. [ noun ] (law) a member of a police force
Synonyms: policeman police_officer

"it was an accident, officer"

Related terms: lawman detective bull captain inspector trooper police_constable motorcycle_cop Mountie police_matron bobby traffic_cop shoofly trooper gendarme police
4. [ verb ] (military) direct or command as an officer
Related terms: command
5. [ noun ] (nautical,work) a person authorized to serve in a position of authority on a vessel
Synonyms: ship's_officer

"he is the officer in charge of the ship's engines"

Related terms: mariner master mate sailing_master supercargo purser steward privateer
6. [ noun ] Last name, frequency rank in the U.S. is 18532