one-way mirror

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noun

a sheet of glass that can be seen through from one side and is a mirror on the other, used especially for observation of criminal suspects by law-enforcement officials or witnesses.

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Also called two-way mirror .

Words nearby one-way mirror

Onetti, one-two, one up, one-upmanship, one-way, one-way mirror, one way or another, one-way ticket, one-woman, one-worlder, on faith, take it

How to use one-way mirror in a sentence

Added to drinking water at concentrations of around one part per million, fluoride ions stick to dental plaque.
Anti-Fluoriders Are The OG Anti-Vaxxers|Michael Schulson|July 27, 2016|DAILY BEAST
In his view, a writer has only one duty: to be present in his books.
Houellebecq’s Incendiary Novel Imagines France With a Muslim President|Pierre Assouline|January 9, 2015|DAILY BEAST
Yet this, in the end, is a book from which one emerges sad, gloomy, disenchanted, at least if we agree to take it seriously.
Houellebecq’s Incendiary Novel Imagines France With a Muslim President|Pierre Assouline|January 9, 2015|DAILY BEAST
The fear of violence should not determine what one does or does not say.
Trolls and Martyrdom: Je Ne Suis Pas Charlie|Arthur Chu|January 9, 2015|DAILY BEAST

The al Qaeda-linked gunmen shot back, but only managed to injure one officer before they were taken out.
France Kills Charlie Hebdo Murderers|Nico Hines|January 9, 2015|DAILY BEAST
Practise gliding in the form of inflection, or slide, from one extreme of pitch to another.
Expressive Voice Culture|Jessie Eldridge Southwick
It is most peculiar, and when he plays that way, the most bewitching little expression comes over his face.
Music-Study in Germany|Amy Fay
He alludes to it as one of their evil customs and used by them to produce insensibility.
Tobacco; Its History, Varieties, Culture, Manufacture and Commerce|E. R. Billings.
"Capital, capital," his lordship would remark with great alacrity, when there was no other way of escape.
The Pit Town Coronet, Volume I (of 3)|Charles James Wills
In this way bundles of the plants are easily made, and in most cases these can be readily carried about.
How to Know the Ferns|S. Leonard Bastin