The following terms as used in this chapter shall, unless a different meaning clearly appears from the context, have the following meanings:
Any establishment or place of business which is maintained, used, or operated for storing, keeping, buying, or selling three or more wrecked, scrapped, ruined, inoperable, unregistered, or dismantled motor vehicles or motor vehicle parts.
Any motor vehicle that (1) does not have in effect a valid registration issued by the registrar of Motor Vehicles under Chapter 90 of the General Laws of Massachusetts, or (2) does not have affixed to it a valid registration plate; provided, however, that the licensee's possession of a general registration plate, a repair plate, a dealer's plate, a farm plate, or the like, or the affixing of such a plate to any motor vehicle, shall not result in any such motor vehicle being considered registered for the purposes of this chapter. It is the intent of this chapter that a motor vehicle shall be considered unregistered for the purposes of this chapter unless (1) the registrar of motor vehicles has issued a separate, valid registration under Chapter 90 of the General Laws of Massachusetts which is specific to that motor vehicle, and (2) the registration plate(s) specific to that motor vehicle is(are) actually affixed to that motor vehicle.