Hangs or postpones (8)
I believe the answer is:
suspends
This clue is a double definition.
'hangs' is the first definition.
(suspending is a kind of hanging)
'postpones' is the second definition.
(suspending is a kind of postponing)
(Other definitions for suspends that I've seen before include "Shelves" , "Brings to a temporary halt" , "Bars temporarily, from school say" , "Delays or postpones" , "Hangs freely" .)