Superseded weight and cash (6)
I believe the answer is:
pounds
'cash' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pounds that I've seen before include "UK monetary units" , "Sterling units of money or weights" , "Strikes; money" , "Crushes or beats with repeated blows" , "Hammers" .)