Reduced share of the proceeds? (3)
I believe the answer is:
cut
This clue might be a double definition.
'reduced' is the first definition.
(similar in meaning)
'share of the proceeds?' is the second definition.
'cut' can be an answer for 'share' (cut is a kind of share). I'm not certain of the 'of the proceeds?' bit.
Can you help me to learn more?
(Other definitions for cut that I've seen before include "Clip" , "score" , "Make an incision" , "Shorten; remove" , "Trim; chop" .)