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two-way mirror

British  

noun

  1. a half-silvered sheet of glass that functions as a mirror when viewed from one side but is translucent from the other

"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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See Examples For:

We stood behind a two-way mirror and watched the people interact there for half an hour before they came into the focus room, which we also watched from behind a mirror.

From Los Angeles Times Jul. 31, 2023

This is usually done in an observation laboratory, complete with video-monitoring equipment and a two-way mirror.

From Seattle Times Jan. 9, 2020

We were standing in an observation room next door, looking out at the testing area through a two-way mirror.

From The New Yorker Nov. 18, 2019

Then I heard voices, the voices of doctors behind a two-way mirror.

From New York Times Nov. 23, 2016

He leans against it, arms folded, and I look past him, searching for the hidden two-way mirror.

From "All The Bright Places" by Jennifer Niven

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