Fearsome fairy tale figure (4)
I believe the answer is:
ogre
'fearsome fairy tale figure' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ogre that I've seen before include "Bugbear" , "'Demon, fiend (4)'" , "character in 'Puss in Boots'" , "Monster, troll" , "Fairy-tale creature" .)