N.Y.C. Admin. Code § 18-103: § 18-103 Trees and vegetation; definitions.

Whenever the word "street" or the plural thereof occurs in sections 18-104, 18-105 and 18-106 of this title, it shall be deemed to include all that is included by the terms street, avenue, road, alley, lane, highway, boulevard, concourse, public square, and public place, or the plurals thereof respectively; the word "tree" or the plural thereof shall be deemed to include all forms of plants having permanent woody self-supporting trunks; the word "vegetation" shall be deemed to include plants collectively of whatever name or nature not included under the term "tree".