iron curtain

ˈi•ron ˈcur•tain, n. [the + ~;
sometimes: Iron Curtain]

a barrier to understanding and the exchange of information created by the hostility of one country toward another, esp. the barrier that existed between the former Soviet Union or its allies and other countries.

i′ron cur′tain,

Government(sometimes caps.) a barrier to understanding and the exchange of information and ideas created by ideological, political, and military hostility of one country toward another, esp. such a barrier between the Soviet Union and its allies and other countries.
Governmentan impenetrable barrier to communication or information, esp. as imposed by rigid censorship and secrecy.

used by Winston Churchill in 1946 to describe the line of demarcation between Western Europe and the Soviet zone of influence

Collins Concise English Dictionary © HarperCollins Publishers::

Iron Curtain n

- (formerly) the guarded border between the countries of the Soviet bloc and the rest of Europe
- (as modifier): Iron Curtain countries

'iron curtain' also found in these entries (note: many are not synonyms or translations):

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