Polish bishop out of work? Nonsense (7)
I believe the answer is:
rubbish
'nonsense' is the definition.
(I've seen this before)
'polish bishop out of work?' is the wordplay.
'polish' becomes 'rub' (polish meaning rub to make shiny).
'out of' is a deletion indicator.
'work?' becomes 'op' (abbreviation for opus).
'bishop' with 'op' taken away is 'bish'.
'rub'+'bish'='RUBBISH'
(Other definitions for rubbish that I've seen before include "Waste matter" , "Refuse, litter" , "Waste; very bad (colloq.)" , "Codswallop or trash" , "make a scathing comment" .)