It's not widely found (5)
I believe the answer is:
local
'found' is the definition.
Both the definition and answer are adjectives. Perhaps you can see an association between them that I don't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for local that I've seen before include "where the neighbours drink?" , "Near at hand" , "Relating to the neighbourhood" , "Pub, maybe" , "round the corner" .)