Dirt, so pig’s rolling around (6)
I believe the answer is:
gossip
'dirt' is the definition.
(I've seen this in another clue)
'so pig's rolling around' is the wordplay.
'rolling around' indicates an anagram.
'so'+'pigs'='sopigs'
'sopigs' with letters rearranged gives 'GOSSIP'.
(Other definitions for gossip that I've seen before include "Idle prattle" , "Loose malicious talk" , "Idle, malicious, chatter" , "Casual talk about other people" , "Idle chat, tattle" .)