French bread causing anguish (4)
I believe the answer is:
pain
This clue is a double definition.
'french bread' is the first definition.
(I've seen this before)
'anguish' is the second definition.
(synonyms)
'causing' acts as a link.
(Other definitions for pain that I've seen before include "Suffering, distress" , "nuisance to be put up with" , "Agony" , "Tiresome figure" , "Sensation of hurt" .)