+A **sign** is a unit of meaning, a mark or gesture that points to or represents something else. It can be a [symbol](/wiki/symbol) used for [communication](/wiki/communication), conveying information or indicating a presence. Signs are fundamental to how we interpret and navigate our environment.
+## See also
+- [Symbol](/wiki/symbol)
+- [Language](/wiki/language)
+- [Meaning](/wiki/meaning)
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