Bahraini bigwig (5)
I believe the answer is:
sheik
'bahraini bigwig' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sheik that I've seen before include "Arab leader -- hikes (anag)" , "Arab tribal head" , "Ruler" , "Leader of an Arab village or family" , "A Sufi master" .)