Crossword Genius

Treated greasy bit of Australia (4,2,3)

Ross

I believe the answer is:

girt by sea

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'australia' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'treated greasy bit' is the wordplay.
'treated' is an anagram indicator.
'greasy'+'bit'='greasybit'
'greasybit' with letters rearranged gives 'GIRT BY SEA'.

'of' acts as a link.

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I've seen this clue in the Sydney Morning Herald.
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