Rubbish garment (5)
I believe the answer is:
pants
This clue is a double definition.
'rubbish' is the first definition.
(informal term meaning poor-quality)
'garment' is the second definition.
(pants is a kind of garment)
(Other definitions for pants that I've seen before include "Rubbish -- underwear" , "Undergarments; rubbish" , "Puffs, gasps" , "longs" , "Frightful" .)