1. a hard pointed growth on the head of certain animals such as cattle, goats, or rhinoceroses
2. a musical instrument made of brass or other material that produces sound when air is blown through it
3. a device that makes a loud warning sound, especially on a vehicle

1. to push or butt with the horns

Examples

• The bull lowered its head and showed its sharp horns.
• She played the French horn in the school orchestra.
• The driver honked the car horn to warn pedestrians.
• The rhinoceros has a single horn on its nose.
• He learned to horn in on conversations uninvited.
• The angry goat tried to horn the farmer.
• The ship’s horn sounded three times before departure.
• The crescent moon looked like a horn in the sky.