Flotsam and jetsam (5)
I believe the answer is:
trash
'flotsam and jetsam' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for trash that I've seen before include "Rubbish, refuse" , "Worthless people; destroy (US slang)" , "bull" , "Wreck; rubbish" , "Rubbish, waste" .)