Several deliveries too many? (4)
I believe the answer is:
over
I believe this is a double definition.
'several deliveries' is the first definition.
(a cricket over consists of six deliveries)
'too many?' is the second definition.
(I've seen this in other clues)
(Other definitions for over that I've seen before include "Given too much money" , "Finished; six balls" , "Invalidate - upset" , "Rouond of six bowls in cricket" , "Accomplished" .)