Big meanie (4)
I believe the answer is:
ogre
'big meanie' 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 "One making giant strides" , "Giant: monster" , "Giant of folklore who liked to eat humans" , "'Demon, fiend (4)'" , "Man-eating giant of folklore" .)