As used in this chapter, the following words shall have the meanings indicated:
DISCHARGE — The expulsion of a projectile from a firearm or the operation of a firearm in such a manner so as to lead one to reasonably conclude, by sight or sound, that a projectile was expelled from a firearm. If the firearm used is capable of the expulsion of a projectile, its firing alone shall be sufficient to constitute a discharge and no further proof of the expulsion of a projectile shall be necessary.
FIREARM — Any device which is designed and intended to expel a projectile by action of gun powder, any other explosive, compressed air, compressed gas or mechanical device, including any device which, when discharged, would by sound or otherwise: lead another to reasonably conclude by sight or sound that the device expelled a projectile; or give the appearance of the expulsion of a projectile even though no expulsion of a projectile occurred. By way of example and not limitation, items that are to be considered firearms under this Part include guns, pistols, rifles and shotguns. The definition of "firearm" shall not be deemed to include items that are traditionally considered to be children's toys when used in the manner for which they were designed. The definition of "firearm" shall not include starter pistols when used in the manner in which they were intended; i.e., to signify the start of a race or other similar event.