officer

(noun) any person in the armed services who holds a position of authority or command. Synonyms: military officer. Example: "An officer is responsible for the lives of his men."

(noun) someone who is appointed or elected to an office and who holds a position of trust. Synonyms: officeholder. Examples: "He is an officer of the court." "The club elected its officers for the coming year."

(noun) a member of a police force. Synonyms: policeman, police officer. Example: "It was an accident, officer."

(noun) a person authorized to serve in a position of authority on a vessel. Synonyms: ship's officer. Example: "He is the officer in charge of the ship's engines."

(verb) direct or command as an officer.