noun
EXAMPLES FROM CORPUS
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Disguised as toilet equipment all the apparatus was there - the listening device and several sophisticated miniaturized bugs.
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He pulled out the next box; there was no mark of any listening device on the wall behind it.
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I took the liberty of planting a listening device in the jukebox you ... earned.
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The businessman was then wired with a listening device and given $ 30, 000 to offer Mr Tucker.