Register the money (4)

I believe the answer is:

note

I believe this is a double definition.

'register' is the first definition.
(I've seen this before)

'the money' is the second definition.
(thesaurus)

(Other definitions for note that I've seen before include "mention" , "Reminder - fame - sound" , "Short communication" , "Characteristic" , "Pay close attention to" .)

I've seen this clue in the Evening Standard.

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