Turn at bat (7)
I believe the answer is:
innings
'turn at bat' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for innings that I've seen before include "Period at the wicket" , "Time at the wicket" , "part of cricket match" , "A team's turn at batting" , "Time at the crease for one batsman (or eleven)" .)