Best spinner (3)
I believe the answer is:
top
This clue is a double definition.
'best' is the first definition.
('top' is associated in meaning with 'best')
'spinner' is the second definition.
(something that spins)
(Other definitions for top that I've seen before include "Peak; child's toy" , "premier" , "Best" , "jumper, say?" , "Upper side" .)