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Meaning of concertina

con•cer•ti•na

Pronunciation: (kon"sur-tē'nu), [key]
— n., v., adj. -naed -na•ing
—n.
  1. a musical instrument resembling an accordion but having buttonlike keys, hexagonal bellows and ends, and a more limited range.
  2. See
—v.i.
  1. to fold, crush together, or collapse in the manner of a concertina: The car concertinaed when it hit the truck.
—v.t.
  1. to cause to fold or collapse in the manner of a concertina.
—adj.
  1. of, pertaining to, or resembling a concertina: concertina pleats.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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