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unlock

[uhn-lok] /ʌnˈlɒk/
verb (used with object)
1.
to undo the lock of (a door, chest, etc.), especially with a key.
2.
to open or release by or as if by undoing a lock.
3.
to open (anything firmly closed or joined):
to unlock the jaws.
4.
to lay open; disclose:
to unlock the secrets of one's heart.
verb (used without object)
5.
to become unlocked.
Origin of unlock
1350-1400
1350-1400; Middle English unloken; see un-2, lock1
Related forms
unlockable, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for unlock

unlock

/ʌnˈlɒk/
verb
1.
(transitive) to unfasten (a lock, door, etc)
2.
(transitive) to open, release, or let loose
3.
(transitive) to disclose or provide the key to: unlock a puzzle
4.
(intransitive) to become unlocked
Derived Forms
unlockable, adjective
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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Word Origin and History for unlock
v.

c.1400, from un- (2) + lock (v.). Figurative sense is attested from 1530s. Related: Unlocked; unlocking.

Online Etymology Dictionary, © 2010 Douglas Harper
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