Fixing a painting with a hole (3)
I believe the answer is:
gap
'a hole' is the definition.
(thesaurus)
'fixing a painting with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'GAP' is hidden in the letters of 'fixing a painting'.
(Other definitions for gap that I've seen before include "Room" , "A break or opening as in a hedge" , "Opening, breach" , "Cleft" , "Narrow opening" .)