Crossword Genius

In which you may make money and clean up (5)

Ross

I believe the answer is:

sweep

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

'clean up' is the definition.
(I've seen this before)

'in which you may make money' is the wordplay.
I cannot really see how this works, but
'make' could be 'wee' (synonyms) and 'wee' is located in the answer.
'money' could be 'p' and 'p' is located in the answer.
A single letter 's' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

'and' is the link.

Can you help me to learn more?

(Other definitions for sweep that I've seen before include "a puppet" , "Use a brush" , "Brush; rush" , "long movement" , "Cricket stroke" .)

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