The outback (5-5)
I believe the answer is:
never-never
'the outback' is the definition.
(I have seen 'Australian outback' mean 'never never' so perhaps 'outback' could also mean 'never never')
This is the entire clue.
(Other definitions for never-never that I've seen before include "credit facility" , "Hire-purchase" , "Easy terms" .)