Cultural environment (6)
I believe the answer is:
milieu
'cultural environment' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for milieu that I've seen before include "Environment - setting" , "Environmental condition, surrounding" , "Social environment or set of surroundings" , "(Social) setting" , "'Surroundings, setting (6)'" .)