What is the meaning of officer?

noun

• Any person in the armed services who holds a position of authority or command.
  • usage: "an officer is responsible for the lives of his men"
  • synonyms: military officer
• Someone who is appointed or elected to an office and who holds a position of trust.
  • usage: "he is an officer of the court"; "the club elected its officers for the coming year"
  • synonyms: officeholder
• A member of a police force.
  • usage: "it was an accident, officer"
  • synonyms: policeman, police officer
• A person authorized to serve in a position of authority on a vessel.
  • usage: "he is the officer in charge of the ship's engines"
  • synonyms: ship's officer

verb

• Direct or command as an officer. .