Crossword Genius

They turn up in an address in Australia (7)

Ross

I believe the answer is:

diggers

I'm a little stuck... Click here to teach me more about this clue!

'they' is the definition.
Both the definition and answer are plural nouns.
Perhaps they are linked in a way I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for diggers that I've seen is " Those down under".)

I've seen this clue in The Globe and Mail.
Want a hint initially instead of a full solution? Install my app