Object to pin being moved (5)
I believe the answer is:
point
'object' is the definition.
(I know that point is a type of object)
'to pin being moved' is the wordplay.
'being moved' indicates anagramming the letters.
'to'+'pin'='topin'
'topin' anagrammed gives 'POINT'.
(Other definitions for point that I've seen before include "Dot -- full stop" , "Bearing - precise moment" , "how to repair masonry" , "Significance" , "Indicate - off-side fielding position" .)