From Longman Dictionary of Contemporary Englishunlockun‧lock /ʌnˈlɒk $ -ˈlɑːk/ ●●○ verb [transitive] 1 OPENto unfasten the lock on a door, box etc► see thesaurus at open2 → unlock the secrets/mysteries of something→ See Verb table
Examples from the Corpus
unlock• Half way along he unlocked a garage and let the door slide up to reveal a newish Range Rover.• ''Come and see'', Jo said, unlocking a huge iron gate.• I began working at Canary Wharf alongside the river, working in all sorts of media in order to unlock certain ideas.• I unlocked the door of the apartment and found that Edusha was still awake.• Unlock the door! We can't get out!• You unlock the front door of your house.• His tall house loomed over him as he unlocked the front door.• Rockhart says that the critical-success factor approach aims to unlock the manager's implicitly held model of success.• Which of these keys unlocks the safe? 