Penny trapped in loveless marriage wants release (5)
I believe the answer is:
unpin
'release' is the definition.
(I've seen this before)
'penny trapped in loveless marriage' is the wordplay.
I cannot quite understand how this works, but
'penny' could be 'p' (short for pence) and 'p' is found in the answer.
'in' is found in the answer.
The remaining letters 'un' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'wants' acts as a link.
Can you help me to learn more?
(Other definitions for unpin that I've seen before include "Things tied together" , "Remove fastening from" , "Loosen" , "release" , "free" .)