+A **thorn** is a sharp, rigid projection found on the stem of a [Plant](/wiki/plant), serving primarily as a form of natural [Defense](/wiki/defense). These modified stems deter herbivores, protecting the plant from damage. Thorns are distinct from similar plant structures like prickles or spines.
+## See also
+- [Rose](/wiki/rose)
+- [Spine](/wiki/spine)
+- [Prickle](/wiki/prickle)
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