Ottoman Empire official (3)
I believe the answer is:
aga
'ottoman empire official' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aga that I've seen before include "--- Khan, title of the head of the Ismaili Muslims" , "--- Khan, spiritual head of Ismaili Muslims" , "Chief officer" , "Eastern potentate" , "Cooking range" .)