verb
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to cause to wake from or as from sleep.
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to wake up; to evoke; to arouse, excite or stir up.
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to make another to be vigilant.
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to warn; to caution - a) to tell (a person) of a danger, coming evil, misfortune, etc.; to put on guard; b) to caution against specific faults; c) to inform or remind, by way of warning.