horn horn /ˈhɔrn/

noun

1. () (game) a noisemaker (as at parties or games) that makes a loud noise when you blow through it  ( horn )
   (game) a noisemaker (as at parties or games) that makes a loud noise when you blow through it
     The sound of the horn signaled the start of the race.
   The sound of the horn signaled the start of the race.
   
   
2. () One of the bony outgrowths on the heads of certain ungulates  ( horn )
   one of the bony outgrowths on the heads of certain ungulates
    The rhinoceros lowered its horn and charged at the perceived threat
   The rhinoceros lowered its horn and charged at the perceived threat
   
   
3. () Any hard protuberance from the head of an organism that is similar to or suggestive of a horn  ( horn )
   any hard protuberance from the head of an organism that is similar to or suggestive of a horn
   
4. () A brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves  ( cornet , trump [Archaic] , horn , trumpet )
   a brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves
    The trumpeter played a majestic fanfare during the overture
   The trumpeter played a majestic fanfare during the overture
   
   
5. () A high pommel of a Western saddle (usually metal covered with leather)  ( saddle horn , horn )
   a high pommel of a Western saddle (usually metal covered with leather)
   
6. () A noise made by the driver of an automobile to give warning  ( horn )
   a noise made by the driver of an automobile to give warning
    The driver in front of me wasn't paying attention, so I honked my horn to get their attention
   The driver in front of me wasn't paying attention, so I honked my horn to get their attention
   
7. A device on an automobile for making a warning noise  ( automobile horn , car horn , hooter , horn , motor horn )
   a device on an automobile for making a warning noise
    My motorbike's horn stopped working
   My motorbike's horn stopped working
   
   
8. A brass musical instrument consisting of a conical tube that is coiled into a spiral and played by means of valves  ( horn , French horn )
   a brass musical instrument consisting of a conical tube that is coiled into a spiral and played by means of valves
    The French horn player performed a beautiful solo during the concerto
   The French horn player performed a beautiful solo during the concerto
   
   
9. An alarm device that makes a loud warning sound  ( horn )
   an alarm device that makes a loud warning sound
    She honked the horn impatiently, alerting the car ahead to move.
   She honked the horn impatiently, alerting the car ahead to move.
   
   
10. A device having the shape of a horn  ( horn )
    a device having the shape of a horn
     Horns at the ends of a new moon
    horns at the ends of a new moon
     The horn of an anvil
    the horn of an anvil
     The cleat had two horns
    the cleat had two horns
    
    
11. The material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails  ( horn )
    the material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails
    

verb

1. Stab or pierce with a horn or tusk  ( horn , tusk )
   stab or pierce with a horn or tusk
    The rhino horned the explorer
   the rhino horned the explorer