Crossword Genius

NSW money? (4)

Ross

I believe the answer is:

note

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'money?' is the definition.
(thesaurus)

I don't understand the remainder of the clue.

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(Other definitions for note that I've seen before include "Brief letter - distinction" , "Bill" , "Characteristic" , "held by piano teacher" , "Short written message" .)

I've seen this clue in The Telegraph.
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