An Etymological Dictionary of the German Language/Ahorn
Appearance
Ahorn, m.. ‘maple,’ from the equiv. MidHG. and OHG. âhorn, m., the â of which is inferred from the Swiss dial.; comp. Du. ahorn. It is primit. allied to Lat. ăcer, n., ‘maple' (Gr. ἄκαστος) and Gr. ἀκαταλίς ‘juniper berry.’ The G. word, at all events, cannot be regarded as borrowed from Lat. For another old name see under Maßholder.