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horn - definition and synonyms

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noun     horn pronunciation in American English
Word Forms
  1. 1
    [countable]Sound effect the object in a car or other vehicle that makes a loud warning noise when you press it
    honk/beep/sound your horn:

    A car honked its horn at me.

  2. 2
    [countable] one of the hard pointed parts that usually grow in a pair on the heads of some animals, for example cows or goats. The horns on a deer are called antlers.
    1. a.
      [countable] one of the pointed parts on the heads of evil creatures such as the devil
    2. b.
      [uncountable] the hard substance that animalshorns are made of
  3. 3
    [countable] a musical instrument consisting of a tube that is wide at one end and that you play by blowing into the narrow end

    the French horn

    1. a.
      a simple instrument made from the horn of an animal that you blow to make a sound


a rainbow produced when water droplets in the air reflect light from the moon rather than the sun

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