Definition of "piano accordion" [piano accordion]

• An accordion with a keyboard similar to that of a piano. (noun)

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• "Old Mickey O’Brien came out from Gilly to play the fiddle, and there was always someone on hand to man the piano accordion or the button accordion, taking turns to spell each other as Mickey’s accompanists while the old violinist sat on a barrel or a wool bale for hours playing without a rest, his pendulous lower lip drooling because he had no patience with swallowing; it interfered with his tempo."