Decaying animal flesh (7)
I believe the answer is:
carrion
'decaying animal 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.)" , "rotten" , "Decaying flesh of dead animals" , "Rotting dead body of an animal" , "Dead flesh (for e.g. crow)" .)