The meaning of the Acronym NRB is...

NRB is

• Not Recommended Behavior

More Meanings For NRB:

• New Research Building
• Not Recommended Behavior
• National Religious Broadcasters
• Network Report Builder
• Noninstitutional Review Board
• Non Resident Bangladeshis
• New Regulatory Body
• National Research Bureau
• Natural Resources Board
• No Reaction Baby
• No Reason Boner
• Naval Requirements Board

NRB is also in:

• FDA
• Funnies
• Hospitals
• Law
• Networking
• Ocean Science
• Religion
• Unfiled
• US Government