Ancient Egyptian ruler (7)
I believe the answer is:
pharaoh
'ancient egyptian ruler' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for pharaoh that I've seen before include "Eg, Tutankhamen" , "Old ruler" , "Tut, in brief, was one" , "Title of ancient Egyptian kings" , "A Rameses maybe" .)