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Definition of 'horn'


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


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

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