Dickens' "Barnaby ________” (5)
I believe the answer is:
rudge
'dickens' barnaby' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rudge that I've seen before include "Dickensian character" , "Dickens character" , "'Barnaby - - ' by Charles Dickens" , "Dickensian halfwit" , "Dickens novel 'Barnaby .....'" .)