Splintered bats (7)
I believe the answer is:
cracked
This clue is a double definition.
'splintered' is the first definition.
(thesaurus)
'bats' is the second definition.
('cracked' can be a synonym of 'bats')
(Other definitions for cracked that I've seen before include "Fractured" , "Having fissures" , "Slangily eccentric - or broken" .)