Definition of "waker" [wak•er]

• Watchful; vigilant; alert. (adjective)
• One who wakes somebody or something. (noun)

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• "Fritz the next morning: "It was not necessary to set the 'waker' to go off, as I know enough to send 'Chake' home when it's time.""
• "To learn to take the universe seriously there is no quicker way than to watch -- to be a "waker," as the country-people call it."
• "Pell found the ride altogether unsatisfactory; he referred to the sleeper train as a “waker” and described it as “one of the roughest rides since the stagecoach.”"