accordion Meaning, Definition & Usage

  1. noun a portable box-shaped free-reed instrument; the reeds are made to vibrate by air from the bellows controlled by the player
    squeeze box; piano accordion.

WordNet

Ac*cor"di*on noun
Etymology
See Accord.
Definitions
  1. (Mus.) A small, portable, keyed wind instrument, whose tones are generated by play of the wind upon free metallic reeds.

Webster 1913