Doha dignitary (4)
I believe the answer is:
emir
'doha dignitary' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for emir that I've seen before include "Muslim chief" , "Islamic ruler" , "eader abroad?" , "Eastern ruler in mire" , "Title of various rulers; I'm ER (anag.)" .)