[variablelist A Variable List
    [[term 1] [The definition of term 1]]
    [[term 2] [The definition of term 2]]
    [[term 3] [
    The definition of term 3.

    Definitions may contain paragraphs.
    ]]
]

will generate:

The rules for variable lists are the same as for tables, except that only 2 "columns" are allowed. The first column contains the terms, and the second column contains the definitions. Those familiar with HTML will recognize this as a "definition list".