Definition of Faraday cage noun from the Oxford Advanced Learner's Dictionary

 

Faraday cage

 noun
noun
BrE BrE//ˈfærədeɪ keɪdʒ//
 
; NAmE NAmE//ˈfærədeɪ keɪdʒ//
 
(physics)
 
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a metal screen that is put around a piece of equipment in order to stop electricity from gathering on it
See the Oxford Advanced American Dictionary entry: Faraday cage