What bookies pay out after Worcestershire's first spell at the crease (8)
I believe the answer is:
winnings
'what bookies pay out' is the definition.
I can't tell whether this definition defines the answer.
'after worcestershire's first spell at the crease' is the wordplay.
'after' says to put letters next to each other.
'first' indicates taking the first letters.
'spell at the crease' becomes 'innings' (cricket term).
The first letter of 'worcestershire' is 'w'.
'w' next to 'innings' is 'WINNINGS'.
(Other definitions for winnings that I've seen before include "Money made at gambling" , "Profits from gambling" , "Punter's takings" , "pounds gained, say" , "Spoils" .)