concertina: Meaning and Definition of

con•cer•ti•na

1. a musical instrument resembling an accordion but having buttonlike keys, hexagonal bellows and ends, and a more limited range.
2. See

1. to fold, crush together, or collapse in the manner of a concertina: The car concertinaed when it hit the truck.

1. to cause to fold or collapse in the manner of a concertina.

1. of, pertaining to, or resembling a concertina: concertina pleats.