+A merlon is the solid, upright segment of a [battlement](/wiki/Battlement), offering protection atop a fortified wall. It stands between open [crenels](/wiki/Crenel), a rhythmic pattern for defence.
+## See also
+- [Parapet](/wiki/Parapet)
+- [Castle](/wiki/Castle)
+- [Fortification](/wiki/Fortification)
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