Brought nothing back to fill the gaps broken in the fences (7)
I believe the answer is:
palings
'the fences' is the definition.
(paling is a kind of fence)
'brought nothing back to fill the gaps broken' is the wordplay.
'brought nothing back' becomes 'lin' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to fill' indicates putting letters inside.
'broken' indicates an anagram.
'gaps' anagrammed gives 'pags'.
'lin' inserted into 'pags' is 'PALINGS'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for palings that I've seen before include "fencing material?" , "fences" .)