Brahmanist (5)
I believe the answer is:
hindu
'brahmanist' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hindu that I've seen before include "Brahma is one of his gods" , "Central Asian mountain range" , "Eastern believer" , "Believer in South Asian religion" , "Follower of India's most popular religion" .)