Related Clues:

• Annoying sleep sound
• Annoyed about note that's heard in the night
• "SKN-X-X!" in comics
• It's no fun
• One way to annoy one's spouse
• Long deep track
• Certain night noise
• Dirt road groove
• Boring thing, so to speak
• Undeviating routine
• Pantomime dame's get-up
• Force to go to, though it's a bore
• Poles stoned and sound asleep!
• Game at final furrow
• Manage to get one away from a bore