Daydream influenced by a region of France? (14)
I believe the answer is:
departmentally
'daydream influenced by a' is the definition.
I can't judge whether this definition defines the answer.
'region of france?' is the wordplay.
I cannot quite see how this works, but
'region' could be 'part' (synonyms) and 'part' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for departmentally that I've seen before include "how a big firm should be organised?" , "In small groups" .)