Part of the community (4)
I believe the answer is:
unit
'part' is the definition.
(unit is a kind of part)
'of the community' is the wordplay.
'of' indicates a hidden word.
'UNIT' is hidden within 'community'.
(Other definitions for unit that I've seen before include "Kitchen fitting" , "Part of a kit" , "Individual thing; one" , "Module" , "Single complete domestic fixture" .)