The meaning of the Acronym NB is...

NB is

• Newborn
• New Born
• Nose Bleed

More Meanings For NB:

• Text document (Nota Bene)
• Non Blank
• National Body
• Niobium
• Niobium
• Noise Blanker
• News Bulletin
• Naive Bayes
• Nursing Building
• Naked Bunch
• Nasty Bastard
• Naked Bike
• Noble Bitch
• Navy Blue
• Newton Book

NB is also in:

• Adults
• Architecture
• Chemistry
• Colors
• Electronics
• File Extensions
• General
• Mathematics
• Unfiled
• Universities