Gossip, so to speak (4)
I believe the answer is:
dirt
'gossip so to speak' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dirt that I've seen before include "Obscenity" , "Grime - scandal" , "See 26" , "Grime, filth" , "Scandalous information" .)