Carry-on container (3)
I believe the answer is:
bin
'carry-on container' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bin that I've seen before include "Ordinary household receptacle for rubbish" , "Waste container" , "Household rubbish is placed in it" , "Discard" , "Domestic receptacle for rubbish" .)