BOF: /B-O-F/ or /bof/ n. 1. [common] Abbreviation for the
phrase "Birds Of a Feather" (flocking together), an informal
discussion group and/or bull session scheduled on a conference
program. It is not clear where or when this term originated, but it
is now associated with the USENIX conferences for Unix techies and
was already established there by 1984. It was used earlier than
that at DECUS conferences and is reported to have been common at
SHARE meetings as far back as the early 1960s. 2. Acronym,
`Beginning of File'.