Dead and decaying flesh (7)
I believe the answer is:
carrion
'dead and decaying flesh' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for carrion that I've seen before include "Cor! Rain! (anag.)" , "Decaying animal flesh" , "Rotting flesh of dead animals" , "Food for crow" , "Dead meat as food" .)