What does PB stand for?

What does PB mean?

PB	Previous Balance Business » Accounting
PB	Peter Boy Miscellaneous » Funnies
PB	Players Book Community » Sports
PB	Personal Box Internet » Chat
PB	Puck Bunny Miscellaneous » Funnies
Pb	Plumbum (Lead) Academic & Science » Chemistry
PB	Poo Bear Community » Famous
PB	Phonetically Balanced Miscellaneous
PB	Powerful Blower Business » Products
PB	Polymerase Basic Medical » Human Genome
PB	Parabolic Barrier Academic & Science » Physics
PB	Papa Bull Internet » Chat
PB	Patrol Bomber Miscellaneous » Aircraft
PB	Physio Ball Community » Sports
PB	Fax (FAXability Plus) Computing » File Extensions
PB	Polar Ball Community » Sports
PB	Prayer Beast Community » Religion
PB	Prosodic Boundary Academic & Science » Geology
PB	Phonebook (WinFax Pro) Computing » File Extensions
PB	Peter Bartram Academic & Science » Universities
PB	Peter Bartram Community » Famous
PB	Padington Bear Community » Famous
PB	Prominent Blogger Internet » Chat
PB	Proboard configuration files Computing » File Extensions
PB	Performance Barn Business » Firms