v. [UN-2 4 b.] trans. To free from a girth; to release or remove by undoing a girth.
1580. Hollyband, Treas. Fr. Tong, Descengler vn cheval, to vngirth a horse.
176072. H. Brooke, Fool of Qual. (1792), IV. 180. Two knavish wags came, and, ungirthing his saddle, supported it on either hand.
1787. W. Taylor, Scots Poems, 100. You hear, an een ungirth their laigen.
1820. Scott, Monast., ix. Ye may ungirth your horses, and dismiss.