arbitrator

arbitrator is a   Noun

Definition:

[1] A person, or one of two or more persons, chosen by parties who have a controversy, to determine their differences. See Arbitration.

[2] One who has the power of deciding or prescribing without control; a ruler; a governor. Though Heaven be shut, And Heaven`s high Arbitrators sit secure. Milton. Masters of their own terms and arbitrators of a peace. Addison.

Synonyms: