Prize money wife has left for a spell of cricket (7)
I believe the answer is:
innings
'spell of cricket' is the definition.
(session of playing cricket)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for innings that I've seen before include "Period of batting in cricket" , "Time spent batting" , "knock" , "part of cricket match" , "Batsman's turn at the crease" .)