Simple Definition of unlock
: to open the lock on (something)
: to find out about (something that was secret or unknown)
: to make (something) available for use
Examples of unlock in a sentence
Could you unlock the door for me?
geneticists unlocking the secrets of DNA
The material's potential was unlocked only through extensive testing.
How can I unlock my computer if I've forgotten the password?
This class will unlock your creativity.
First Known Use of unlock
UNLOCK Defined for Kids
Definition of unlock for Students
1 : to unfasten the lock of
2 : to make known <Scientists are unlocking the secrets of nature.>
Seen and Heard
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