Flawed, including edict (3)
I believe the answer is:
law
'edict' is the definition.
(I've seen this before)
'flawed including' is the wordplay.
'including' says the answer is hidden in the clue.
'LAW' is hidden within 'flawed'.
(Other definitions for law that I've seen before include "Regulation" , "Rule imposed by authority" , "'Possession is nine points of the ...'" , "Rule, statute" , "Collection of rules for a society" .)