from The American HeritageĀ® Dictionary of the English Language, 4th Edition

  • n. The military, political, and ideological barrier established between the Soviet bloc and western Europe from 1945 to 1990.
  • n. A barrier that prevents free exchange of ideas and information: "That department and the editorial department are separated by an almost impenetrable iron curtainā€ ( Brendan Gill).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A barrier made of iron in the theatre, lowered between the stage and the auditorium for safety or to prevent communication.
  • n. Any impenetrable barrier.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an impenetrable barrier to communication or information especially as imposed by rigid censorship and secrecy; used by Winston Churchill in 1946 to describe the demarcation between democratic and communist countries


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