Meaning of ACCORDION in English

/ əˈkɔːdiən; NAmE əˈkɔːrd-/ noun

a musical instrument that you hold in both hands to produce sounds. You press the two ends together and pull them apart and press buttons and/or keys to produce the different notes.

—see also piano accordion



mid 19th cent.: from German Akkordion , from Italian accordare to tune.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.