Related Clues:

• Be out
• Rest period
• What new parents lose
• Peels backward?
• Berth rite
• Yield to exhaustion
• 'To ___—perchance to dream': Hamlet
• Be under
• What an alarm may end
• Catch some Zs
• Dormancy
• "Nature's soft nurse," to Shakespeare
• A bed habit
• Dream on?
• Insomniac's desire