often capitalized, often attributive
1
a : the 26th and last letter of the English alphabet
b : a graphic representation of this letter
c : a speech counterpart of orthographic z
2
: a graphic device for reproducing the letter z
3
: one designated z especially as the 26th in order or class or the third in order or class when x is made the first
4
: something shaped like the letter Z
5
: wink sense 1 —usually used in plural catch some z's before dinner