A building to get rid of (4)
I believe the answer is:
shed
I believe this is a double definition.
'a building' is the first definition.
(shed is a kind of building)
'to get rid of' is the second definition.
(shed can mean to get rid of or discard)
(Other definitions for shed that I've seen before include "Take off in hut?" , "Abandoned" , "Dump" , "Get rid of - garden building" , "storage building" .)