Keyword Directories Directory Directories Directory for Keywords . In computer programming, a keyword is a word or identifier that has a particular meaning to the programming language. The meaning of keywords -- and, indeed, the meaning of the notion of keyword -- differs widely from language to language.In Common Lisp, in contrast, keywords (or keyword symbols) are a special sort of symbol, or identifier. Unlike other symbols, which usually stand for variables or functions, keywords are self-quoting and evaluate to themselves. Keywords are usually used to label named arguments to functions, and to represent symbolic values.
