411 REFERENCE · Wiktionary
CONELRAD
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Proper noun
en US historical en control of electromagnetic radiation a method of emergency broadcasting to the public of the United States in the event of enemy attack during the Cold War, rapidly switching the television or radio transmitter stations to make the broadcasts unsuitable for bombers that might attempt to home in on the signals.
Further reading
Anagrams
en acdelnor Arlecdon colander Calderon