The most common and most likely answer to this crossword clue is the 6 letter word UNLOCK
U
N
L
O
C
K
More clues leading to the result UNLOCK
- Release a Parisian philosopher, guillotine finally spared
- Free one for the French rugby player
- Free from a French embrace
- Open University joined by new rugby forward
- Free one in French bar
- Free country holding Nationalist officer back
- Use key to give someone a haircut?
- No luck breaking open
- Open, roofless fun block
Buddy explains!

The straight part
We know that "open" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case open = unlock.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does UNLOCK mean?
UNLOCK noun- The act of unlocking something.
- To undo or open a lock or something locked by, for example, turning a key, or selecting a combination.
- To obtain access to something.
- To disclose or reveal previously unknown knowledge.
- To be or become unfastened or unrestrained.