Arbiter - Definition
arbiter
n 1: someone with the power to settle matters at will; "she was
the final arbiter on all matters of fashion" [syn:
arbiter, supreme authority]
2: someone chosen to judge and decide a disputed issue; "the
critic was considered to be an arbiter of modern literature";
"the arbitrator's authority derived from the consent of the
disputants"; "an umpire was appointed to settle the tax case"
[syn: arbiter, arbitrator, umpire]