concertina

Definitions of concertina
  1. noun
    free-reed instrument played like an accordion by pushing its ends together to force air through the reeds
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    types:
    bandoneon
    a type of concertina popular in South America
    type of:
    free-reed instrument
    a wind instrument with a free reed
  2. verb
    collapse like a concertina
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    type of:
    collapse
    fold or close up
  3. noun
    coiled barbed wire used as an obstacle
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    type of:
    barbed wire, barbwire
    strong wire with barbs at regular intervals used to prevent passage
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