/ Dictionary / Index U unlock: Meaning and Definition of Find definitions for: un•lock Pronunciation: (un-lok'), [key] — v.t. to undo the lock of (a door, chest, etc.), esp. with a key. to open or release by or as if by undoing a lock. to open (anything firmly closed or joined): to unlock the jaws. to lay open; disclose: to unlock the secrets of one's heart. —v.i. to become unlocked. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unlock (Thesaurus) unloanable unlooked Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language