For the purposes of §§ 137.10 et seq., the following words and phrases shall have the following meanings ascribed to them respectively.
AIR RIFLE. Any air gun, air pistol, spring gun, spring pistol, B.B. gun, pellet gun, or any implement that is not a firearm, which impels a pellet constructed of hard plastic, steel, lead, or other hard materials with a force that reasonably is expected to cause bodily harm.
DEALER. Any person, copartnership, association, or corporation engaged in the business of selling at retail or renting any of the articles included in the definition of AIR RIFLE.