Vehicle a motoring organisation brought from east (3)
I believe the answer is:
car
'vehicle' is the definition.
(car is a kind of vehicle)
'a motoring organisation brought from east' is the wordplay.
'a motoring organisation' becomes 'rac'.
'brought from east' shows that the letters should be reversed in order (letters go right to left or east to west).
'rac' back-to-front is 'CAR'.
(Other definitions for car that I've seen before include "Passenger vehicle" , "estate, perhaps" , "Road vehicle; rail coach" , "Motor vehicle" , "Conveyance" .)