Not fit to be eaten (8)
I believe the answer is:
inedible
'not fit to be eaten' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inedible that I've seen before include "unfit for course!" , "Uneatable" , "Unpalatable" , "Not fit for eating" , "Not fit for consumption" .)