Meaning of OFFICER in English

OFFICER

■ noun

1》 a person holding a position of authority, especially a member of the armed forces who holds a commission or a member of the police force.

↘a bailiff.

2》 a holder of a post, especially of a public, civil, or ecclesiastical office.

3》 a member of a certain grade in some honorary orders, such as the grade next below commander in the Order of the British Empire.

■ verb provide with an ~ or ~s.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.