justiciar

(historical) A high-ranking judicial officer of medieval England or Scotland.

(historical) A justice: a high-ranking judge.

(historical) A Chief Justiciar: the highest political and judicial officer of the Kingdom of England in the 12th and 13th centuries.

(historical) Various equivalent medieval offices elsewhere in Europe.

(Christian, theology, rare) A justiciary: a believer in the doctrine (or heresy) that adherence to religious law redeems mankind before God.