Rubbish! Get a stretcher! (6)
I believe the answer is:
litter
I believe this is a triple definition!
'rubbish' is the first definition.
(litter is a kind of rubbish)
'get' is the second definition.
(thesaurus)
'a stretcher' is the third definition.
(thesaurus)
(Other definitions for litter that I've seen before include "Chair or bed carried on two poles" , "untidiness" , "Rubbish strewn about the streets" , "Discarded paper etc." , "Family" .)