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lip microphone

British  

noun

  1. a microphone designed and shaped to be held close to the mouth, for use in noisy environments

"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

Example Sentences

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The collection includes microphones used to capture the chimes of Big Ben in 1924 and a lip microphone used during 1930s sporting events.

From BBC

But German censors shut off mention of the raids and installed a lip microphone that "did not pick up the roar of the antiaircraft batteries ringing Broadcast House nor the thuds of bombs exploding near by."

From Time Magazine Archive