1. open the lock of

- unlock the door

Definition categories: contact, open

2. set free or release

Definition categories: contact, disengage, withdraw

3. become unlocked

- The door unlocked from the inside

Definition categories: change, disengage

Sentences with unlock as a verb:

- I unlocked the door and walked in.

- I unlocked the dictionary article so it could be edited.

- This computer game is shareware, but you can pay for a code to unlock the full version.

- The discovery of a clue unlocked the mystery.

- The safe was already unlocked.