Definition of "foobar" [foobar]

• A serious mistake. (noun)
• A metasyntactic variable name, a place holder for words; compare foo, bar. (noun)

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• "I thought this was pretty cool treguly@ns: ~$ host - t txt foobar. wp.dg.cx descriptive text "The term foobar is a common placeholder name, also referred to as metasyntactic variable, used in computer programming or computer-related documentation."
• "The only thing I find that it lacks is being able to embed album art into the tag .... for which MP3Tag+Albumart downloader does a good job (both can be easily run from within foobar, which makes it a bit easier)"
• "RailsSpace. com/profile/foobar will look for an action called foobar, which isn't what we want at all."