Things disturbed Kitty in disco (9)
I believe the answer is:
nightspot
'disco' is the definition.
(I've seen this before)
'things disturbed kitty' is the wordplay.
'disturbed' indicates an anagram (the order of letters is disturbed).
'kitty' becomes 'pot' (both can mean a shared fund).
'things' is an anagram of 'nights'.
'nights'+'pot'='NIGHTSPOT'
'in' acts as a link.
(Other definitions for nightspot that I've seen before include "club, perhaps" , "Club, disco" , "venue providing entertainment" , "Place for after-dark entertainment" .)