bulletin board

board where public notices can be posted, board for hanging announcements

A bulletin board (pinboard, pin board or notice board in British English) is a place where people can leave public messages, for example, to advertise things to buy or sell, announce events, or provide information. Bulletin boards are often made of a material such as cork to facilitate addition and removal of messages or it can be placed on the computer so people can leave and erase messages for other people to read and see.
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A form of electronic messaging in which addressed messages or files are entered by users into a computer or network of computers. Note: Other users may obtain, at their convenience and request, messages or files available to them.

bulletin board system

<communications, application> (BBS, bboard /bee'bord/; after a physical piece of board on which people can pin messages written on paper for general consumption - a "physical bboard"). A computer and associated software which typically provides an electronic message database where people can log in and leave messages. Messages are typically split into topic groups similar to the newsgroups on Usenet (which is like a distributed BBS). Any user may submit or read any message in these public areas.
Apart from public message areas, a BBS may provide archives of files, personal electronic mail and any other services or activities of interest to the bulletin board's system operator (the "sysop"). Thousands of local BBSes are in operation throughout the world, typically run by amateurs for fun out of their homes on MS-DOS boxes with a single modem line each. Although BBSes have traditionally been the domain of hobbyists, an increasing number of BBSes are connected directly to the Internet, and many BBSes are currently operated by government, educational, and research institutions. Fans of Usenet and Internet or the big commercial time-sharing bboards such as CompuServe, CIX and GEnie tend to consider local BBSes the low-rent district of the hacker culture, but they serve a valuable function by knitting together lots of hackers and users in the personal-micro world who would otherwise be unable to exchange code at all.
Use of this term for a Usenet newsgroup generally marks one either as a newbie fresh in from the BBS world or as a real old-timer predating Usenet.
(1998-03-24)

A board located at each dam upon which is displayed information concerning the navigability of the dam, such as indicating when movable dams are down and open river conditions exist. Also located elsewhere such as at gages to publish gage readings and river level trend. (TNDOT1)