Definition of Z noun from the Oxford Advanced Learner's Dictionary



    (also z) noun
    BrE BrE//zed//
    ; NAmE NAmE//zed//
    ; US especially //ziː//
    (pl. Zs, Z’s, z’s
    BrE BrE//zedz//
    ; NAmE NAmE//zedz//
    ; US //ziːz//
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  1. 1 [countable, uncountable] the 26th and last letter of the English alphabet ‘Zebra’ begins with (a) Z/‘Z’.
  2. 2Z’s [plural] (North American English, informal, humorous) sleep I need to catch some Z's.
  3. Idioms including everything there is to know about something He knew his subject from A to Z.
See the Oxford Advanced American Dictionary entry: Z