Why is the ninth month called September?
not a native letter in Old English; in Anglo-French words it represents the "ts" sound (e.g. Anglo-French fiz, from Latin filius, modern Fitz); from late 13c. it began to be used for the voiced "s" sound and had fully taken that role by 1400. For letter name, see zed.
Thou whoreson Zed, thou vnnecessary Letter. ["King Lear," II.ii.69]Series of zs to represent a buzzing sound first attested 1852; zees "spell of sleep, a nap" is slang first recorded 1963, American English student slang.
zeta ze·ta (zā'tə, zē'-)
Symbol ζ The sixth letter of the Greek alphabet.
Some sleep; a nap: If he wants a few zees we can go on automaticverb
To sleep; snooze; cop zs: Gotta Z a little while
[1960s+; fr the conventional sibilant or buzzing sound attributed to a sleeping or snoring person]
An ounce of a narcotic: trips to the rundown neighborhood to purchase Zs (ounces) and even Ks (kilograms) of cocaine
[1960s+ Narcotics; fr the conventional abbreviation of ounce, ''oz'']