An Etymological Dictionary of the German Language/Öse
Öse, f., ‘ear, hook,’ from late MidHG. and early ModHG. (MidG. and MidLG.) œse, f., ‘ear, hook, handle’; the usual assumption that the word is borrowed from Lat. ansa, ‘handle,’ is not to be preferred to the opinion that Öse and Öhr are identical, and that the s from which the r of Ohr and Öhr is derived is preserved in Öse; see Öhr.