Related Clues:

• Air resistance
• Pull with effort
• Show ennui
• Haul laboriously
• Midnight rumble
• Race illegally
• 'Tootsie' wardrobe
• Bedtime indicator
• Nocturnal annoyance, perhaps
• Sound caused by the soft palate's vibration
• Sound made while sacked out
• Betray boredom
• Pull behind
• Keep others awake at night, maybe
• Keep your bedmate up, maybe