UNLOCK

[verb] [T] - to open (something, esp. a door which is locked) using a key or an electronic deviceCould you unlock the door for me - my hands are full.I keep worrying that I've left the garage door unlocked.(figurative) A chemical has been discovered that may be the key to unlocking (= solving) the mysteries of Parkinson's disease.(figurative) One of poetry's functions is to somehow unlock the imagination.