An Etymological Dictionary of the German Language/Auster
Auster, f., ‘oyster,’ ModHG. only, from earlier ModHG. ûster, from Du. oester, which, with the equiv. AS. ôstre, E. oyster, Fr. huitre, Ital. ostrica, is based upon Lat. ostrea, ostreum, Gr. ὄστρεον, ‘oyster, mussel.’