People from community mostly on Cork border (4)
I believe the answer is:
folk
'people' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for folk that I've seen before include "People; type of music" , "Kind of music" , "People in general" , "[KINDRED]" , "Sort of music" .)