UMPIRE. A person selected by two or more arbitrators. When they are authorize to do so by the submission of the parties, and they cannot agree as to the subject-matter referred to them, whose duty it is to decide the matter in dispute. Sometimes the term is applied to a single arbitrator, selected by the parties themselves. Kyd on Awards, 6, 75, 77 Caldw. on Arb. 38; Dane's Ab. Index, h. t.; 3 Vin. Ab. 93; Com. Dig. Arbitrament, F; 4 Dall. 271, 432; 4 Sco. N. S. 378; Bouv. Inst. Index, h. t.