Large oceanic bird (9)
I believe the answer is:
albatross
'large oceanic bird' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for albatross that I've seen before include "Oceanic bird - golf score" , "Great hole" , "As Borstal is adapted for a big bird" , "Atlas bros alter the large bird with narrow wings" , "Large oceanic bird" .)