iron curtain

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(sometimes initial capital letters) a barrier to understanding and the exchange of information and ideas created by ideological, political, and military hostility of one country toward another, especially such a barrier between the Soviet Union and its allies and other countries.
an impenetrable barrier to communication or information, especially as imposed by rigid censorship and secrecy.
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Origin of iron curtain

Used by Winston Churchill in 1946 to describe the line of demarcation between Western Europe and the Soviet zone of influence
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use iron curtain in a sentence

British Dictionary definitions for iron curtain

Iron Curtain

  1. (formerly) the guarded border between the countries of the Soviet bloc and the rest of Europe
  2. (as modifier)Iron Curtain countries
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for iron curtain

Iron Curtain

The former division between the communist nations of eastern Europe — the Eastern Bloc — and the noncommunist nations of western Europe. The term refers to the isolation that the Soviet Union imposed on its satellites in the Eastern Bloc and to the repressive measures of many Eastern Bloc governments. (See Berlin Wall (see also Berlin Wall) and cold war.)

notes for Iron Curtain

The expression Iron Curtain was coined by Winston Churchill, who was prime minister of Britain in World War II. Churchill first used the term soon after the war, when the Soviet Union was beginning to carry out its plans for postwar dominance of eastern Europe.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.