APB
also a.p.b., "general alarm," 1960, police jargon initialism (acronym) for all-points bulletin, itself attested by 1953 (perhaps more in the jargon of detective novels than in actual police use). The notion is "information of general importance," broadcast to all who can hear it.
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}