Fairy-tale fiends (5)
I believe the answer is:
ogres
'fairy-tale fiends' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ogres that I've seen before include "Gorse (anag.)" , "Monsters can be goers" , "Bugbears" , "Beasts" , "Giants in fairytales" .)