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mortise lock

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noun

a lock housed within a mortise in a door or the like, so that the lock mechanism is covered on both sides.

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Origin of mortise lock

First recorded in 1770–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for mortise lock

mortise lock

noun

a lock set into a mortise in a door so that the mechanism of the lock is enclosed by the door
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
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