magistrate

noun

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.”

2. (historical)A high official of the state or a municipality in ancient Greece or Rome.
3. (broadly)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.”

4. (Quebec)A master's degree.