¦ noun
1. an area distinguished on the basis of a particular characteristic, use, restriction, etc.
(also time zone) a range of longitudes where a common standard time is used.
2. chiefly Botany & Zoology an encircling band or stripe of distinctive colour, texture, etc.
3. archaic a belt or girdle.
¦ verb
1. divide into or assign to zones.
2. archaic encircle as or with a band or stripe.
3. (zone out) N. Amer. informal fall asleep or lose concentration.
Derivatives
zonal adjective
zonally adverb
Origin
ME: from Fr., or from L. zona 'girdle', from Gk zone.