Mississippi Code Title 49. Conservation and Ecology § 49-25-5

(a) The term “junk” shall mean old or scrap copper, brass, rope, rags, batteries, paper, trash, rubber debris, waste, or junked, dismantled or wrecked automobiles, or parts thereof, iron, steel, and other old or scrap ferrous or nonferrous material.

(b) The term “automobile graveyard” shall mean any establishment or place of business which is maintained, used, or operated for storing, keeping, buying or selling wrecked, scrapped, ruined or dismantled motor vehicles or motor vehicle parts.

(c) The term “junkyard” shall mean an establishment or place of business which is maintained, operated, or used for storing, keeping, buying or selling junk, or for the maintenance or operation of an automobile graveyard, and the term shall include garbage dumps and sanitary fills.

(d) “Interstate system” means that portion of the national system of interstate and defense highways located within this state, as officially designated, or as may hereafter be so designated, by the state highway commission, and approved by the secretary of commerce, pursuant to the provisions of Title 23, United States Code, “Highway.”

(e) “Primary system” means that portion of connected main highways, as officially designated, or as may hereafter be so designated, by the state highway commission, and approved by the secretary of commerce, pursuant to the provisions of Title 23, United States Code, “Highways.”