Pic on a pec, say (3)
I believe the answer is:
tat
'pic on a pec say' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tat that I've seen before include "Shoddy article" , "Shoddy items" , "Utterly tasteless objects" , "What you get for tit" , "Bric-a-brac" .)