Compost container (3)
I believe the answer is:
bin
'compost container' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bin that I've seen before include "Common receptacle for household waste" , "Domestic receptacle for rubbish" , "Discard" , "Household rubbish is placed in it" , "Storage container" .)