piˌano acˈcordion noun [countableC] British EnglishBrE an accordion 手风琴
piano accordion• Normally a mouth organ or a piano accordion accompanies the music and plays the melody.• Noel Bridgeman's piano accordion takes over where Dooley Wilson's piano left off, and adds just the right ingredient.• I've been playing the piano and the piano accordion for about 60 years.