Main Entry: ¹um·pire

Pronunciation: \ˈəm-ˌpī(-ə)r\

Function: noun

Etymology: Middle English oumpere, alteration (from misdivision of a noumpere) of noumpere, from Anglo-French nounpier, nompere, from nounpier, adjective, single, odd, from non- + per equal, from Latin par

Date: 15th century

1 : one having authority to decide finally a controversy or question between parties: as a : one appointed to decide between arbitrators who have disagreed b : an impartial third party chosen to arbitrate disputes arising under the terms of a labor agreement
2 : an official in a sport who rules on plays
3 : a military officer who evaluates maneuvers