This spins, whichever way you look at it (5)
I believe the answer is:
rotor
This clue is a double definition.
'this spins' is the first definition.
(I know this)
'whichever way you look at it' is the second definition.
(Other definitions for rotor that I've seen before include "Turning blade" , "one lifting chopper?" , "Arm moving" , "Palindromic revolving part of machine" , "Part of electric motor" .)