White-tailed sea eagle (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
erne
'white-tailed sea eagle' is the definition.
(synonyms)
This is all the clue.
(Other definitions for erne that I've seen before include "Flier" , "Seabird" , "Fish-eating sea eagle" , "Irish lough" , "Marine flyer" .)