UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈhɔːn/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/hɔrn/ ,USA pronunciation: respelling(hôrn)

WordReference Random House Learner's Dictionary of American English © 2020
horn /hɔrn/USA pronunciation   n. 
  1. Zoology[countable] one of the hard, permanent, hollow, and usually paired growths that stick out from the heads of cows, goats, sheep, etc.
  2. Zoology[countable] a similar growth, as an antler.
  3. Zoology the hard substance of which horn growths are made:[uncountable]a handle made of horn.
  4. Music and Dance[countable] a wind instrument in music, as a trumpet.
  5. Automotive an instrument for sounding a warning signal:[countable]an automobile horn.
  6. Telecommunications, Slang Terms[ count;
    usually: the + ~][Slang.]a telephone:been on the horn all morning.

  1. horn in, [Informal.]to intrude: [no object]He was always horning in when I tried to talk to her.[+ in + on + object]He was horning in on our conversation.

adj. [before a noun]
  1. made of horn:a horn handle.
  1. Idiomsblow or  toot one's own horn, to boast about oneself.
  2. Idiomson the horns of a dilemma, facing and forced to choose between two equally difficult choices.

horned, adj. : a great horned owl.
horn•less, adj. 

WordReference Random House Unabridged Dictionary of American English © 2020
horn  (hôrn),USA pronunciation n. 
  1. Zoologyone of the bony, permanent, hollow paired growths, often curved and pointed, that project from the upper part of the head of certain ungulate mammals, as cattle, sheep, goats, or antelopes.
  2. Zoologya similar growth, sometimes of hair, as the median horn or horns on the snout of the rhinoceros, or the tusk of the narwhal.
  3. Zoologyantler.
  4. Zoologya process projecting from the head of an animal and suggestive of such a growth, as a feeler, tentacle, or crest.
  5. Zoologythe bony substance of which such animal growths are composed.
  6. Zoology, Anatomyany similar substance, as that forming tortoise shell, hoofs, nails, or corns.
  7. an article made of the material of an animal horn or like substance, as a thimble, spoon, or shoehorn.
  8. any projection or extremity resembling the horn of an animal.
  9. something resembling or suggesting an animal horn:a drinking horn.
  10. a part resembling an animal horn attributed to deities, demons, etc.:the devil's horn.
  11. Usually,  horns. the imaginary projections on a cuckold's brow.
  12. Music and Dance
    • a wind instrument, originally formed from the hollow horn of an animal but now usually made of brass or other metal or plastic.
    • See  French horn. 
  13. Music and Dancesomething used as or resembling such a wind instrument.
  14. Music and Dance[Slang.]a trumpet.
  15. Automotivean instrument for sounding a warning signal:an automobile horn.
  16. Aeronauticsany of certain short, armlike levers on the control surfaces of an airplane.
  17. [Radio.]
    • Radio and Televisiona tube of varying cross section used in some loudspeakers to couple the diaphragm to the sound-transmitting space.
    • Slang Termsa loudspeaker.
  18. Telecommunications, Slang Terms[Slang.]a telephone or radiotelephone:I've been on the horn all morning.
  19. the high protuberant part at the front and top of certain saddles;
    a pommel, esp. a high one.
  20. Building[Carpentry.](in a door or window frame) that part of a jamb extending above the head.
  21. Astronomyone of the curved extremities of a crescent, esp. of the crescent moon.
  22. Geographya crescent-shaped tract of land.
  23. Geographya pyramidal mountain peak, esp. one having concave faces carved by glaciation.
  24. a symbol of power or strength, as in the Bible:a horn of salvation.
  25. each of the alternatives of a dilemma.
  26. Buildingthe narrow, more pointed part of an anvil.
  27. Metallurgya projection at the side of the end of a rolled sheet or strip, caused by unevenness of the roll due to wear.
  28. Time[Horol.](in a lever escapement) either of the two prongs at the end of the lever fork guarding against overbanking when the guard pin is in the crescent.
  29. Idiomsblow ( or  toot) one's own horn, [Informal.]to publicize or boast about one's abilities or achievements:He's a bright fellow, but likes to blow his own horn too much.
  30. Idiomsdraw or  pull in one's horns, to restrain oneself or become less belligerent;
    retreat:Since he lost so much gambling, he's drawn in his horns a bit.
  31. Idiomslock horns, to conflict, quarrel, or disagree:The administration and the staff locked horns over the proposed measures.
  32. Idiomson the horns of a dilemma, confronted with two equally disagreeable choices.

  1. to cuckold.
  2. to butt or gore with the horns.
  3. Nautical, Naval Terms[Shipbuilding.]to set up (a frame or bulkhead of a vessel being built) at a proper angle to the keel with due regard to the inclination of the keel on the ways;
  4. horn in, [Informal.]to thrust oneself forward obtrusively;
    intrude or interrupt:Every time we try to have a private conversation, the boss horns in.

  1. made of horn.
hornish, adj. 
hornless, adj. 
hornless•ness, n. 
hornlike′, adj. 
  • bef. 900; Middle English horn(e) (noun, nominal), Old English horn; cognate with Dutch horen, Old Norse, Danish, Swedish horn, German Horn, Gothic haurn, Latin cornu cornu, Irish, Welsh corn; akin to Greek kéras horn (see cerat-)

Horn  (hôrn),USA pronunciation n. 
  1. Place NamesCape. See  Cape Horn. 

Collins Concise English Dictionary © HarperCollins Publishers::
horn /hɔːn/ n
  1. either of a pair of permanent outgrowths on the heads of cattle, antelopes, sheep, etc, consisting of a central bony core covered with layers of keratin
  2. the outgrowth from the nasal bone of a rhinoceros, consisting of a mass of fused hairs
  3. any hornlike projection or process, such as the eyestalk of a snail
  4. the antler of a deer
  5. the constituent substance, mainly keratin, of horns, hooves, etc
  6. (in combination): horn-rimmed spectacles
  7. a container or device made from this substance or an artificial substitute: a shoe horn, a drinking horn
  8. an object or part resembling a horn in shape, such as the points at either end of a crescent, the point of an anvil, the pommel of a saddle, or a cornucopia
  9. a primitive musical wind instrument made from the horn of an animal
  10. any musical instrument consisting of a pipe or tube of brass fitted with a mouthpiece, with or without valves
    See French horn, cor anglais
  11. slang any wind instrument
  12. a device for producing a warning or signalling noise
  13. (in combination): a foghorn
  14. (usually plural) the imaginary hornlike parts formerly supposed to appear on the forehead of a cuckold
  15. Also called: acoustic horn, exponential horn a hollow conical device coupled to the diaphragm of a gramophone to control the direction and quality of the sound
  16. any such device used to spread or focus sound, such as the device attached to an electrical loudspeaker in a public address system
  17. a stretch of land or water shaped like a horn
  18. Brit slang an erection of the penis
vb (transitive)
  1. to provide with a horn or horns
  2. to gore or butt with a horn
Etymology: Old English; related to Old Norse horn, Gothic haurn, Latin cornu horn

ˈhornless adj
Collins Concise English Dictionary © HarperCollins Publishers::
Horn /hɔːn/ n
  1. Cape
    See Cape Horn
'horn' also found in these entries:

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