Just about suitable for restoration work (5)
I believe the answer is:
refit
'restoration work' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'just about suitable' is the wordplay.
'just about' becomes 're' (regarding. I am not sure about the 'just' bit.).
'suitable' becomes 'fit' (similar in meaning).
're'+'fit'='REFIT'
'for' is the link.
Can you help me to learn more?
(Other definitions for refit that I've seen before include "Updating or repair process for a ship" , "Equip for further use" , "Mend" , "Do repair job" , "Refurbishment (of ship)" .)