Definition of cone of silence in English:

cone of silence

Syllabification: cone of si·lence

Entry from US English dictionary


  • 1An imaginary device that prevents eavesdropping on a private conversation.
  • 1.1An electronic device or isolated room intended for the same purpose.
  • 2A directive that prohibits oral communication about a specified subject.
  • 2.1An agreement or conspiracy to maintain secrecy about a subject.


1960s: originally a fantasy prop in the television series Get Smart.

More definitions of cone of silence

Definition of cone of silence in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
a powerful whirlpool in the sea