Óhsta

According to the Old English Dictionary:

an ;

óhsta

m. The arm-pit, oxter (in northern dialects, e. g. Yorkshire, Cumberland, Scotland) :-- Óhsta ascella, Wrt. Voc. ii. 10, 5. Ócusta, Ep. Gl. 2 b, 19. Óxtan ascilla, Wrt. Voc. - i. 283, 9. Cf. óxn. ohsta