Egyptian god of the sun (5)
I believe the answer is:
horus
'egyptian god of the sun' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for horus that I've seen before include "Falcon-headed god of ancient Egypt" , "Falcon-headed old Egyptian god" , "Egyptian god of the sun" , "Egyptian sun-god" , "Egyptian hawk-headed god" .)