Second-hand or pre-owned (4)
I believe the answer is:
used
I believe this clue is a double definition.
'second-hand' is the first definition.
(I've seen this in another clue)
'pre-owned' is the second definition.
(I've seen this before)
(Other definitions for used that I've seen before include "Exploited - not new" , "Pre-loved" , "taken advantage of!" , "with a previous owner" , "not got directly" .)