verb (used with object)

to unfasten (a door, window shutter, etc.) by lifting the latch.

verb (used without object)

to become unlatched.

Origin of unlatch

First recorded in 1635–45; un-2 + latch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unlatch

Historical Examples of unlatch

British Dictionary definitions for unlatch



to open or unfasten or come open or unfastened by the lifting or release of a latch
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