N.Y.C. Charter § 459: Section 459. Definitions.

a. The term "school" means a public, private or parochial, day care center or nursery or pre-school, elementary, intermediate, junior high, vocational, or high school.

b. The term "school zone" means in or on or within any building, structure, athletic playing field, playground or land contained within the real property boundary line of a public, private or parochial day care center or nursery or pre-school, elementary, intermediate, junior high, vocational, or high school, or within one thousand feet of the real property boundary line comprising any such school.

c. The term "firearm" means a firearm, rifle, shotgun, or assault weapon, as such terms are defined in section 10-301 of the administrative code, or a machine gun, as defined in penal law section 265.00.