Possible Clues:

• Bony outgrowths
• They can be honked
• Animal outgrowths and noisemakers on the road
• Triceratops's three
• What the instruments erkencho and shofar are made of
• Brassy instruments
• Trombones and trumpets
• Pointed outgrowths on cattle, goats etc
• Devil's features shaved top to bottom
• Traffic cacophony