It's considered unlucky getting some hole in one (9)
I believe the answer is:
albatross
'hole in one' is the definition.
'albatross' can be an answer for 'hole' (I have seen 'Great hole' mean 'albatross' so perhaps 'hole' could also mean 'albatross'). I am unsure of the 'in one' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for albatross that I've seen before include "potentially a disaster if one's damaged at sea" , "Great shot" , "Golf course achievement > accounting for handicap" , "Coleridge's marine bird." , "can be an encumbrance" .)