A little part of the Ballarat heritage (6)
I believe the answer is:
rather
'a little' is the definition.
(thesaurus)
'part of the ballarat heritage' is the wordplay.
'part of' indicates a hidden word.
'RATHER' is hidden within 'ballarat heritage'.
(Other definitions for rather that I've seen before include "Quite; on the contrary" , "To a certain extent" , "More precisely; instead of" , "On the contrary or to some extent" , "Preferably, instead" .)