ALPENHORN Meaning of ALPENHORN in English [ 'alpənhɔ:n ](also alphorn ) ■ noun a very long valveless wooden wind instrument played like a horn and used for signalling in the Alps.OriginC19: from Ger., lit. 'Alp horn'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004