Caped Crusader (6)
I believe the answer is:
'caped crusader' is the definition.
(nickname for Batman)
This is the entire clue.
(Other definitions for batman that I've seen before include "Comic superhero" , "Comic book hero with Robin as a sidekick" , "Masked crusader of cartoon and film" , "gives help to one in a mess?" , "Comic/film superhero" .)