To unfasten, as what is locked; as, to unlock a door or a chest.
- To undo (a lock) by turning a key or corresponding part.
- To undo the lock of.
- To give access to; open.
- To set free; release: The news unlocked a torrent of emotion.
- To provide a key to; disclose or reveal: unlock a mystery.
- To become unfastened, loosened, or freed from something that restrains.