Definition of alpenhorn noun from the Oxford Advanced Learner's Dictionary

 

alpenhorn

 noun
noun
BrE BrE//ˈælpənhɔːn//
 
; NAmE NAmE//ˈælpənhɔːrn//
 
(also alphorn) Musical instruments
 
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a very long wooden musical instrument that you blow into, used for signalling in the Alps See related entries: Musical instruments Word Origin late 19th cent.: from German, literally ‘Alp horn’.
See the Oxford Advanced American Dictionary entry: alpenhorn