The most common and most likely answer to this crossword clue is the 5 letter word UNPIN
I've seen this crossword clue in Independent
U
N
P
I
N
More clues leading to the result UNPIN
- Separate set of countries with private code
- Release princess initially trapped in loveless marriage
- Detach page with superior French article at home
- One translated secret code for free
- Loosen pressure to enter marriage as ring’s avoided
- Let loose by heads of unusually nice prison in Norway
- Penny trapped in loveless marriage wants release
Buddy explains!

The straight part
We know that "release" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case release = unpin.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 UNPIN mean?
UNPIN verb- To unfasten by removing a pin.
- To detach (an icon, application, etc.) from the place where it was previously pinned.
- To get out of a pin