noun
instructor; teacher; professor
Refers to a teacher or instructor in a formal institutional setting such as a school, training academy, military, or driving school. Often implies a role with authority or specialized training duties.
自動車学校の教官はとても厳しかった。
The driving school instructor was very strict.
彼は大学の教官として長年教鞭をとった。
He taught for many years as a university instructor.