Melbourne is its capital
I believe the answer is:
victoria
'melbourne is its capital' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for victoria that I've seen before include "Queen - lake -sponge" , "Queen (eighteen thirty seven to nineteen hundred and one)" , "place where one may be stationed?" , "one wasn't amused" , "She falls in Africa" .)