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 esp. 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 1--usu. used in pl. <catch some z's before dinner> Z n (1967): z particle |