A lexical variable is a variable that can be referenced only within the lexical scope of the form that establishes that variable; lexical variables have lexical scope. Each time a form creates a lexical binding of a variable, a fresh binding is established.
Within the scope of a binding for a lexical variable name, uses of that name as a variable are considered to be references to that binding except where the variable is shadowed[2] by a form that establishes a fresh binding for that variable name, or by a form that locally declares the name special.
A lexical variable always has a value. There is no operator that introduces a binding for a lexical variable without giving it an initial value, nor is there any operator that can make a lexical variable be unbound.
Bindings of lexical variables are found in the lexical environment.
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