Arbitrator – this term refers to the legal figure of an independent referee who has to resolve the legal dispute. He issues a decision which binds the parties and could not be a subject of an appeal, as there is no higher instance. Usually, arbitrators have legal education and qualification as bona fide lawyers or attorneys-at-law. Sometimes they work as independent arbiters, sometimes form arbitration courts.
A synonym is the term arbiter.
Example: “Mr. Smith was respected arbitrator in the county and his services were preferred by many parties who had legal disputes that had to be resolved”.