Bogeymen (5)
I believe the answer is:
ogres
'bogeymen' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ogres that I've seen before include "Monstrous giants and man-eaters" , "Terrifying types" , "Formidable people" , "Awful brutes" , "She-giant of fairy tale" .)