Definition of "unlock" in English

verb

1. (transitive) To undo or open a lock or something locked by, for example, turning a key, or selecting a combination.

   • I unlocked the door and walked in.

2. (transitive) To obtain access to something; to meet the requirements of a security or protection system.

   • I unlocked the dictionary article so I could edit it.
   • This computer game is shareware, but you can pay for a code to unlock the full version.

3. (transitive, mobile telephony) To configure (a mobile phone) so that it is not bound to any particular carrier.

4. (transitive) To disclose or reveal previously unknown knowledge or potential.

   • The discovery of a clue unlocked the mystery.

5. (intransitive) To be or become unfastened or unrestrained.

6. (transitive, figurative) To make available.

7. (transitive) To undermine something that has control over a situation; to find a way to counter or oppose.

noun

1. The act of unlocking something.

2. (video games) An initially hidden feature that is made available to reward the player for some achievement.