Folklore monster (4)
I believe the answer is:
ogre
'folklore monster' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ogre that I've seen before include "Monstrous creature" , "Giant of folklore, eats humans" , "The giant is some goer" , "'Demon, fiend (4)'" , "stern one who inspires fear" .)