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See also: Iron Curtain



iron curtain (plural iron curtains)

  1. A barrier made of iron in the theatre, lowered between the stage and the auditorium for safety or to prevent communication.
  2. (idiomatic) Any impenetrable barrier.
    • 1982, Ervand Abrahamian, Iran Between Two Revolutions‎[1], ISBN 0691101345, page 450:
      The coup d'etat also constituted an iron curtain for the social scientists.