Related Clues:

• ''The best meditation,'' per the Dalai Lama
• Short break of a sort
• Nocturnal ambition
• Twelve noon - drops off for a zizz
• Student's about to dribble in repose
• Have a nap
• 'Go the Fuck to ___'
• Power-saving mode
• Hypnos's realm
• Shut-eye
• Nighttime refresher
• Looking back, removes skin to hit the hay
• Fail to stay awake
• Result of counting sheep, perhaps
• Hamlet's word before 'perchance to dream'