bulletin

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A brief report, especially an official statement on a matter of public interest issued for immediate publication or broadcast.
• noun A brief update or summary of current news, as on television or radio or in a newspaper.
• noun A periodical, especially one published by an organization or society.
• noun A printed program, especially one listing the order of worship for a religious service.
• transitive verb To announce or make known by bulletin.

from The Century Dictionary.

• To make known by a bulletin publicly posted.
• noun An authenticated official report concerning some public event, such as military operations, the health of a sovereign or other distinguished personage, etc., issued for the information of the public.
• noun Any notice or public announcement, especially of news recently received.
• noun A name given to various periodical publications recording the proceedings of learned societies.
• noun The bulletin published by the chief signal officer of the United States army from 1875 to 1889, containing the daily reports and charts and monthly and annual summaries of the international simultaneous meteorological observations for the whole northern hemisphere.

from the GNU version of the Collaborative International Dictionary of English.

• noun A brief statement of facts respecting some passing event, as military operations or the health of some distinguished personage, issued by authority for the information of the public.
• noun Any public notice or announcement, especially of news recently received.
• noun A periodical publication, especially one containing the proceeding of a society.
• noun a board on which announcements are put, particularly at newsrooms, newspaper offices, etc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A short report, especially one released through official channels to be broadcast or publicized
• noun A short news report
• noun A short printed publication, especially one produced by an organization
• verb To announce something by means of such a report or publication

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb make public by bulletin
• noun a brief report (especially an official statement issued for immediate publication or broadcast)