Claptrap, piffle (8)
I believe the answer is:
nonsense
I believe this clue is a double definition.
'claptrap' is the first definition.
(I've seen this before)
'piffle' is the second definition.
(I know that piffle can be written as nonsense)
(Other definitions for nonsense that I've seen before include "Language without meaning" , "Boloney, tosh" , "Foolish behaviour" , "Quick look" , "Claptrap, hogwash" .)