double-lock

American  

[duhb-uhl-lok] / ˈdʌb əlˈlɒk /

verb (used with object)

1. to lock with two turns of a key, so that a second bolt is engaged.

2. to fasten with particular care.

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Etymology

Origin of double-lock

First recorded in 1585–95

Example Sentences

"Anyone could have stolen my notebook; I didn't double-lock my door that day."

From "The Westing Game" by Ellen Raskin

So Mr. Dalroyd continued to lock and double-lock his door at night and, in the morning, seated before his mirror, to watch Joseph the obsequious therein: as he was doing now.

From Our Admirable Betty A Romance by Farnol, Jeffery

I shall double-lock myself in with him and have it out before I die, I'm quite certain of it.'

From Nicholas Nickleby by Dickens, Charles

Mabell saw her, tremblingly, and in a hurry, take the key of her chamber-door out of her pocket, and unlock it; and, as soon as she entered, heard her double-lock, bar, and bolt it.

From Clarissa Harlowe; or the history of a young lady — Volume 6 by Richardson, Samuel

Then he left the closet, taking care to double-lock the door.

From The Exploits of Juve Being the Second of the Series of the "Fantômas" Detective Tales by Souvestre, Émile