The meaning of the Acronym PB is...

PB is

• The Property Of Being
• Poisson Brackets

More Meanings For PB:

• Protection Bit
• Fax (FAXability Plus)
• Phonebook (WinFax Pro)
• Proboard configuration files
• PixBase Setup file
• Peta Byte
• Power Book
• Performance Benchmark
• Pipelined Burst
• Panic Button
• Pocket Basic
• Public Beta
• Project Builder
• Papa Bull
• Pushy Broads

PB is also in:

• Assembly
• Chat
• File Extensions
• General
• Networking
• SMS
• Software