What does Boxing Day have to do with boxing?
late 14c., from Latin zona "geographical belt, celestial zone," from Greek zone "a belt," related to zonnynai "to gird," from PIE root *yes- "to gird, girdle" (cf. Avestan yasta- "girt," Lithuanian juosiu "to gird," Old Church Slavonic po-jasu "girdle").
Originally one of the five great divisions of the earth's surface (torrid, temperate, frigid; separated by tropics of Cancer and Capricorn and Arctic and Antarctic circles); meaning "any discrete region" is first recorded 1822. Zone defense in team sports is recorded from 1927. Zoning "land-use planning" is recorded from 1912. Zoned (adj.) in drug-use sense is attested 1960s, from ozone, which is found high in the atmosphere; the related verb to zone is from 1980s.
An area or a region distinguished from adjacent parts by a distinctive feature or characteristic.
A psychedelic condition, usually due to drugs: He wasn't making much sense because he was way up there in a zone
[1960s+ College students; fr the notion of being as high as the ozone layer of the atmosphere]
[origin uncertain; perhaps fr an African word akin to nzambi, ''god''; perhaps fr Louisiana Creole, ''phantom, ghost,'' fr Spanish sombra, ''shade, ghost''; popularized by horror stories and movies featuring the walking dead persons of voodoo belief]
To make someone stuporous like a zombie: The medication I received for a couple of years ''zombied me out'' so bad I couldn't work (1980s+)