A box-shaped musical instrument with means of keys and buttons, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.
A set of items (concepts, links, or otherwise) that can be packed and unpacked cognitively, or their representation as a set of virtual objects.
A vertical list of items that can be individually expanded and collapsed to reveal their contents.
To fold up, in the manner of an accordion
An accordion where the melody-side keyboard is limited to the notes of diatonic scales in a small number of keys.
A music hall.
A type of reed organ with a single keyboard.