unlock Meaning, Definition & Usage

  1. verb open the lock of
    • unlock the door
  2. verb set free or release
  3. verb become unlocked
    • The door unlocked from the inside

WordNet

Un*lock" transitive verb
Etymology
Cf. AS. unlcan. See 1st Un-, and Lock, v. t.
Definitions
  1. To unfasten, as what is locked; as, to unlock a door or a chest.
  2. To open, in general; to lay open; to undo.
    Unlock your springs, and open all your shades. Pope.
    [Lord] unlock the spell of sin. J. H. Newman.

Webster 1913