Definition of "sleepwalker" []

• Someone who walks about in their sleep (noun)

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• "A sleepwalker is a shapeshifting vampire / werebeast who lives off the energy of virgins."
• "Although Lin, the character, comes to see how communism has made him an emotional "sleepwalker," few real-life Chinese reach such an understanding, says Jin."
• ""sleepwalker" ad ranked No. 5 out of 63 ads gauged by USA Today's Ad Meter, the most closely watched poll of Super Bowl ads 'popularity."