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

 

trombone

 noun
noun
BrE BrE//trɒmˈbəʊn//
 
; NAmE NAmE//trɑːmˈboʊn//
 
Musical instruments
 
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a large brass musical instrument that you blow into, with a sliding tube used to change the note See related entries: Musical instruments Word Origin early 18th cent.: from French or Italian, from Italian tromba ‘trumpet’.
See the Oxford Advanced American Dictionary entry: trombone