Dumpster filler (7)
'dumpster filler' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for trash that I've seen before include "Dismiss as valueless" , "Drivel" , "Worthless people; destroy (US slang)" , "bull" , "Worthless material to be disposed of" .)
(Other definitions for garbage that I've seen before include "Litter" , "Refuse - tripe" , "Nonsense!" , "Waste, refuse" , "Rubbish, waste" .)