Related Clues:

• Goes out for twenty minutes?
• Goes out for an hour or two?
• Stays down, as a spinning yo-yo
• Carpet surfaces
• Emulates a cat
• Hits the hay
• Rest periods of a sort
• Afternoon rituals
• Emulates Rip Van Winkle
• Succumbs to narcolepsy
• They're often taken by toddlers
• Isn't alert
• Goes to the land of Nod
• Briefly visits dreamland
• Drops off for a while