- (computing) beginning of file.
- (Internet) big old frown.
- birds of a feather (group of people with common interests from the phrase "Birds of a feather flock together").
- best of friends.
bof - Computer Definition
(1) (Beginning Of File) The status of a file when it is first opened or when an instruction or command has reset the file pointer. See BOT.
(2) (Birds Of a Feather session) An informal session or presentation. For example, in an IETF BOF, attendees explore a technology to determine if a working group should be established. See Internet Engineering Task Force.