Trudge back inside with idol, perhaps (4)
I believe the answer is:
'trudge' is the definition.
(I know that trudge can be written as plod)
'back inside with idol perhaps' is the wordplay.
'back' shows that the letters should be reversed in order.
'inside' indicates the answer is hidden within the clue.
'dolp' is hidden within 'with idol perhaps'.
'dolp' written backwards gives 'PLOD'.
(Other definitions for plod that I've seen before include "Trudge - policeman" , "Copper" , "Walk doggedly" , "Walk laboriously, trudge" , "Walk slowly and heavily" .)