| a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves | one of the bony outgrowths on the heads of certain ungulates |
| | any hard protuberance from the head of an organism that is similar to or suggestive of a horn |
| | a brass musical instrument consisting of a conical tube that is coiled into a spiral and played by means of valves |
| | a brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves |
| | an alarm device that makes a loud warning sound |
| | a high pommel of a Western saddle (usually metal covered with leather) |
| | a device on an automobile for making a warning noise |
| | a noisemaker (as at parties or games) that makes a loud noise when you blow through it |
| | a device having the shape of a horn |
| | a noise made by the driver of an automobile to give warning |
| | the material (mostly keratin) that covers the horns of ungulates and forms hooves and claws and nails |