foobar n.
[very common] Another widely used [metasyntactic variable]; see [foo] for etymology. Probably originally propagated through DECsystem manuals by Digital Equipment Corporation ([DEC]) in 1960s and early 1970s; confirmed sightings there go back to 1972. Hackers do not generally use this to mean [FUBAR] in either the slang or jargon sense. See also [Fred Foobar]. In RFC1639, "FOOBAR" was made an abbreviation for "FTP Operation Over Big Address Records", but this was an obvious [backronym].
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