Ar"bi*tra`tor (?), n. [L., fr.
arbitrari: cf. F. arbitrateur.] 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.
Syn. -- Judge; umpire; referee; arbiter. See Judge.