Noah Webster's Dictionary 1. (n.) A person, or one of two or more persons, chosen by parties who have a controversy, to determine their differences. See Arbitration. 2. (n.) One who has the power of deciding or prescribing without control; a ruler; a governor.

Multi-Version Concordance Arbitrator (1 Occurrence) Luke 12:14 But he said to him, "Man, who made me a judge or an arbitrator over you?" (WEB WEY NAS)