Related Clues:

• Angry bull's sound
• Bored response
• Pig's noise
• Take, as snuff
• Equine protest
• Real bore
• Sleep sound
• Nap noisily
• Sound of sawing wood?
• Rhino's warning
• Laugh like a horse
• Cause someone's insomnia, maybe
• More men do this than women, studies show
• Bar belt
• Unladylike laugh