1. subst. A hard growth of keratin that protrudes from the top of the head of certain animals, usually paired.
2. subst. Any similar real or imaginary growth or projection such as the elongated tusk of a narwhal, the eyestalk of a snail, the pointed growth on the nose of a rhinoceros, or the hornlike projection on the h
3. subst. An antler.
4. subst. The hard substance from which animals' horns are made, sometimes used by man as a material for making various objects.
an umbrella with a handle made of horn
5. subst. An object whose shape resembles a horn, such as cornucopia, the point of an anvil, or a vessel for gunpowder or liquid.
6. subst. The high pommel of a saddle; also, either of the projections on a lady's saddle for supporting the leg.
7. subst. (architecture) The Ionic volute.
8. subst. (nautical) The outer end of a crosstree; also, one of the projections forming the jaws of a gaff, boom, etc.
9. subst. (carpentry) A curved projection on the fore part of a plane.
10. subst. One of the projections at the four corners of the Jewish altar of burnt offering.
11. subst. Any of several musical wind instruments.
12. subst. (musical instrument) An instrument resembling a musical horn and used to signal others.
hunting horn
13. subst. (automotive) A loud alarm, especially one on a motor vehicle.
14. subst. (chiefly sports) A sound signaling the expiration of time.
The shot was after the horn and therefore did not count.
15. subst. A conical device used to direct waves.
antenna horn
loudspeaker horn
16. subst. (informal, musical instrument) Generally, any brass wind instrument.
17. subst. (slang) A telephone.
Get him on the horn so that we can have a discussion about this.
18. subst. (coarse, slang) An erection of the penis.
19. subst. (geography) A peninsula or crescent-shaped tract of land.
to navigate around the horn
20. subst. A diacritical mark that may be attached to the top right corner of the letters o and u when writing in Vietnamese, thus forming ơ and ư.
21. subst. (botany) An incurved, tapering and pointed appendage found in the flowers of the milkweed (Asclepias).
