Launder women's money after copyright waived (4)
I believe the answer is:
wash
'launder' is the definition.
(synonyms)
'women's money after copyright waived' is the wordplay.
I cannot quite see how this works, but
'women' could be 'w' and 'w' is found within the answer.
The remaining letters 'ash' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for wash that I've seen before include "Brush with ink; launder" , "Clean; dilute coat" , "Flow over" , "bath" , "Clean with liquid" .)