[{"Bold_text": "noun", "List Items": ["Also called piano accordion piano accordion.a portable wind instrument having a large bellows for air through small metal reeds, a keyboard for the right hand, and buttons for sounding single bass notes or chords for the left hand.", "a similar instrument having single-note buttons instead of a keyboard."]}, {"Bold_text": "adjective", "List Items": ["having a fold or folds like the bellows of an accordion:accordion roof; accordion panel."]}, {"Bold_text": "verb (used without object)", "List Items": ["(of a door, roof, or other covering) to open by folding back or pressing together in the manner of an accordion:The roof of the car accordions to let in sunlight and fresh air.", "to fold, crush together, or collapse in the manner of an accordion."]}, {"Bold_text": "verb (used with object)", "List Items": ["to demolish by crushing together lengthwise:The impact accordioned the car beneath the truck."]}]