BBM
abbreviation for trademark
BlackBerry Messenger: an instant messaging application for BlackBerry devices
noun
a message sent or received using BlackBerry Messenger
verb
to send a message using BlackBerry Messenger
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for bbm
But unlike Twitter and Facebook, messages sent over BBM are not public.
Suspects have been arrested for incitement via BlackBerry Messenger (BBM) as well.