duplex lock

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a lock capable of being opened either by a master key or a change key, each operating its own mechanism.

QUIZZES

Are you aware how often people swap around “their,” “there,” and “they’re”? Prove you have more than a fair grasp over these commonly confused words.

Question 1 of 7

Which one of these commonly confused words can act as an adverb or a pronoun?

While the desk sergeant ran a background check, he was roughed up by another officer in the lock-up.
What Would Happen if I Got in White Cop’s Face?|Goldie Taylor|December 30, 2014|DAILY BEAST
“Now they will definitely lock Navalny in prison,” one of the women in the crowd said.
Russia’s Rebel In Chief Escapes House Arrest|Anna Nemtsova|December 30, 2014|DAILY BEAST
Who knew that a competition where you clutch the hand of another man and lock eyes across a table could be this damn gay.
High-End Pervs Film Benedict Cumberbatch and Reese Witherspoon Sucking Face|Amy Zimmerman|December 11, 2014|DAILY BEAST
In many ways, she seems a lock for the win, but her atheism puts her entire character in question.
The Good Wife’s Religion Politics: Voters Have No Faith in Alicia's Atheism|Regina Lizik|November 24, 2014|DAILY BEAST

The Duplex Drive (called DD) was one: an amphibious conversion which could be fitted to a normal Sherman tank.
Blood in the Sand: When James Jones Wrote a Grunt’s View of D-Day|James Jones|November 15, 2014|DAILY BEAST
The place was used as a lock-up for some time after the incorporation, and the old irons were kept on show for years.
Showell's Dictionary of Birmingham|Thomas T. Harman and Walter Showell
I do not know—I do not dare to believe—that I shall live to hear that key grating in the lock.
The Salvaging Of Civilisation|H. G. (Herbert George) Wells
Another manner of punishment consists in making them wear a tin mask, which is fastened with a lock behind.
A Woman's Journey Round the World|Ida Pfeiffer
The launch was already under way, and young Cargill trying to avoid it better, thrust with his boat-hook at the side of the lock.
Uncanny Tales|Various
He turned into the right number, as he thought, but upon trying to insert the key in the lock he found that he had made a mistake.
The Homesteader|Oscar Micheaux