N.J. Stat. § 21:2-2
As used in this chapter:
"Fireworks" include any combustible or explosive composition, or any substance or combination of substances, or article prepared for the purpose of producing a visible or an audible effect by combustion, explosion, deflagration or detonation, but shall not include sparkling devices and novelties.
"Fireworks factory building" means any building or other structure in which the manufacture of fireworks, other than sparklers, or in which any processing involving fireworks other than sparklers, is carried on.
"Fireworks plant" means and includes all lands, with buildings thereon, used in connection with the manufacturing or processing of fireworks, as well as storehouses located thereon for the storage of finished fireworks.
"Highway" means any public street, public alley, public road, or navigable stream.
"Navigable streams" mean streams susceptible of being used, in their ordinary condition, as highways of commerce, over which trade and travel are or may be conducted in the customary modes, but shall not include streams which are not capable of navigation by barges, tugboats, and other large vessels.
"Railroad" means any steam, electric or other railroad which carries passengers for hire, but shall not include sidings or spur tracks installed primarily for the use of the fireworks plant.
"Sparkling devices and novelties" mean:
N.J.S. § 21:2-2