+A **horn** is a hard, pointed outgrowth, typically found on an animal's head, used for defense or display. Beyond biology, it names a [musical instrument](/wiki/musical-instrument) or a [signaling device](/wiki/signal), each capable of producing sound.
+## See also
+- [Antler](/wiki/antler)
+- [Tusk](/wiki/tusk)
+- [Brass Instrument](/wiki/brass-instrument)
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