foo A sample name for absolutely anything,
especially programs and files (especially
scratch files).
First on the
standard list of metasyntactic variables used
in syntax examples.
The terms foobar, foo, bar, and baz are sometimes used as placeholder
names (also referred to as metasyntactic variables) in computer programming or computer-related documentation. They have been used to name entities such as variables, functions, and commands whose purpose is unimportant and
serve only to demonstrate a concept. The
words themselves have no meaning in this usage. Foobar is sometimes used alone; foo, bar, and baz are sometimes used in that order, when multiple entities are needed.