zone 1 n: a specifically designated section of a larger area or territory: as
a: a section of a municipality controlled by specific restrictions on permitted use (as for residences or agriculture)
b: a distance within which the same fare is charged by a common carrier
c: a stretch of roadway or a space within which certain traffic regulations are in force
zone 2 vt zoned, zon·ing
1 a: to partition (as a city or town) by ordinance into sections reserved for different purposes (as residence or business)
b: to designate the permitted use of (property) by placement in a municipal zone
land zoned for agricultural use
2: to restrict different kinds of (use) to different areas
the power to zone land use within its borders
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.