Wind up judge (8)
I believe the answer is:
conclude
I believe this clue is a double definition.
'wind up' is the first definition.
(I've seen this before)
'judge' is the second definition.
(thesaurus)
(Other definitions for conclude that I've seen before include "Finish - deduce" , "Bring or come to an end (8)" , "Infer or bring to an end" , "Reach an opinion based on reasoning" , "Decide - terminate" .)