Rubbish bag initially put in place for vehicle (7)
I believe the answer is:
garbage
'rubbish' is the definition.
(both can mean refuse or trash)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for garbage that I've seen before include "Refuse - tripe" , "'Refuse, rubbish (7)'" , "Worthless matter" , "Food waste or trash" , "Waste, refuse" .)