1. (noun)omega, Z the ending of a series or sequence "the Alpha and the Omega, the first and the last, the beginning and the end"--Revelation
2. (noun)Z, z, zee, zed, ezed, izzard the 26th letter of the Roman alphabet "the British call Z zed and the Scots call it ezed but Americans call it zee"; "he doesn't know A from izzard"
Definition of 'z'
Webster Dictionary
1. z z, the twenty-sixth and last letter of the English alphabet, is a vocal consonant. It is taken from the Latin letter Z, which came from the Greek alphabet, this having it from a Semitic source. The ultimate origin is probably Egyptian. Etymologically, it is most closely related to s, y, and j; as in glass, glaze; E. yoke, Gr. /, L. yugum; E. zealous, jealous. See Guide to Pronunciation, // 273, 274
Definitions of z 
