Sacred Nile bird (4)
I believe the answer is:
ibis
'sacred nile bird' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ibis that I've seen before include "Type of bird" , "Wader once sacred in Egypt" , "Bird venerated by ancient Egyptians" , "Flier" , "Large wading birds with down-curved bills" .)