Related Clues:

• Overnight sensation?
• Sleep disturber
• Zzzz
• Wake the dead?
• Slumber rumble
• Sound asleep?
• Insomniac's annoyance
• Rattle the rafters
• Big bore
• Sound of fright
• Sleep sound?
• Critic’s word for a boring show
• Make a somnolent sound
• Snooze stentorianly
• Sound from a sleep lab