Refuse a dish wife served much earlier (5)
I believe the answer is:
waste
'refuse' 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 waste that I've seen before include "Squander; spoil" , "kill" , "Blow - rubbish" , "Become gradually weaker" , "Misuse" .)