Pariah no longer burning pitch (7)
I believe the answer is:
outcast
'pariah' is the definition.
(I know that pariah can be written as outcast)
'no longer burning pitch' is the wordplay.
'no longer burning' becomes 'out' (I've seen this in another clue).
'pitch' becomes 'cast' (I've seen this before).
'out'+'cast'='OUTCAST'
(Other definitions for outcast that I've seen before include "Pariah, society reject" , "one sent to Coventry" , "Pariah, leper" , "one's not admitted" , "Rejected individual" .)