Go on a buying spree to pass the time? (5)
I believe the answer is:
spend
This clue is a double definition.
'go on a buying spree' is the first definition.
(I've seen this in another clue)
'pass the time?' is the second definition.
(thesaurus)
'to' is the link.
(Other definitions for spend that I've seen before include "Part with money" , "Lay out money" , "While away" , "amount" , "Pay out (on goods)" .)