horn in WordNet English dictionary

1. a device on an automobile for making a warning noise
   automobile horn  car horn  motor horn  horn  hooter 
   
2. a brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves
   cornet  horn  trumpet  trump 
   
3. a brass musical instrument consisting of a conical tube that is coiled into a spiral and played by means of valves
   French horn  horn 
   
4. one of the bony outgrowths on the heads of certain ungulates
   horn 
   
5. any hard protuberance from the head of an organism that is similar to or suggestive of a horn
   horn 
   
6. an alarm device that makes a loud warning sound
   horn 
   
7. a high pommel of a Western saddle (usually metal covered with leather)
   horn  saddle horn 
   
8. a noisemaker (as at parties or games) that makes a loud noise when you blow through it
   horn 
   
9. a device having the shape of a horn
   "horns at the ends of a new moon"; "the hornof an anvil"; "the cleat had two horns"
   horn 
   
10. a noise made by the driver of an automobile to give warning;
    horn 
    
11. the material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails
    horn 
    

1. stab or pierce with a horn or tusk
   "the rhino horned the explorer"
   horn  tusk