“Junk yard” means the use of more than 200 square feet of the area of any parcel, lot, or contiguous lots, for storage, abandonment of or sale of junk, scrap material or similar waste, including the dismantling, demolition or abandonment of automobiles, other vehicles, machinery or parts. Junk yard does not include areas for the storage of machinery, materials and equipment which are accessory to a permitted primary use.