Bowl over restricting out of sorts bat (6)
I believe the answer is:
willow
'bat' is the definition.
(I've seen this before)
'bowl over restricting out of sorts' is the wordplay.
'bowl over' becomes 'wow' (bowl over can mean to wow or astonish).
'restricting' indicates putting letters inside.
'out of sorts' becomes 'i'll' (I've seen this before).
'wow' enclosing 'ill' is 'WILLOW'.
(Other definitions for willow that I've seen before include "Common riverside tree" , "Waterside tree" , "Quick-growing tree with flexible branches" , "Tree of the salix family" , "See 22" .)