magistrate

noun4

1. •
   A judicial officer with limited authority to administer and enforce the law. A magistrate's court may have jurisdiction in civil or criminal cases, or both.

   • In any case, however, I saw that part of her injuries might easily have been redressed, and I urged her often and earnestly to lay her complaint before a magistrate. — 1821
2. •
   A comparable official in medieval or modern institutions.

   • Like other civil servants, Ashok Kumar started his career as an Assistant Collector cum Sub-divisional Magistrate.
3. •
   (historical) A high official of the state or a municipality in ancient Greece or Rome.
4. •
   A master's degree.