Wheels in an arc, possibly
I believe the answer is:
car
'wheels' is the definition.
(car wheel is a kind of wheel)
'an arc possibly' is the wordplay.
'possibly' indicates an anagram.
'arc' anagrammed gives 'CAR'.
'in' is the link.
(Other definitions for car that I've seen before include "One for the road?" , "Private vehicle" , "saloon perhaps" , "estate, perhaps" , "Automobile" .)