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For station worker, Nicholson a bounder (8)

Ross

I believe the answer is:

jackaroo

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'for station' is the definition.
The definition suggests a singular noun which matches the answer.

'worker nicholson a bounder' is the wordplay.
'worker nicholson' becomes 'jack' (I can't explain this - if you can you should believe this answer much more).
'bounder' becomes 'roo' (short for kangaroo, something which bounds).
'jack'+'a'+'roo'='JACKAROO'

Can you help me to learn more?

(Another definition for jackaroo that I've seen is " Australian trainee".)

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