Definition of "z's" []

• Plural form of z. (noun)
• Sleep. (noun)

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• "In my staff bus to work, one of the passengers formed this habit of starting praise/worship at 6 am, when people are trying to get a few more z's before they get to the office."
• "A bunch of gadgets and apps are now on the market to help high-tech insomniacs or just the sleep-curious track their z's."
• "But can consumers trust these fruity concoctions to give them their z's?"