Rubbish, refuse (5)
I believe the answer is:
waste
I believe this is a double definition.
'rubbish' is the first definition.
(I know that rubbish can be written as waste)
'refuse' is the second definition.
(I know that refuse can be written as waste)
(Other definitions for waste that I've seen before include "''.... not, want not''" , "Uncultivated area" , "Blue" , "Use to no purpose" , "Refuse - to get thin" .)