What does RBL stand for?

Radiation Biology Laboratory - Smithsonian Institution

Raised Black Letters - Automobile tires

Range and Bearing Launch - Navy (CAAL)

Rat Basophilic Leukemia - Cell line

Reality-Based Learning Company

Real Time Block list/Black list/Blackhole List - Telecommunications (ACOL)

Reasonable Benefit Limit - Superannuation

Rebroadcast Link - Aerial

Recessed Black Letters - Tire design

Recommended Buy List

Red Bluff - California - Airport symbol (AD)

Red Bluff, CA - Location identifier - FAA (FAAL)

Reid's Base Line - Neuroanatomy

Reliability Based Logistics (SAUS)

Remaining Bundle Limit (SAUS)

Repair Block (SAUS)

Residual Byte Length - Computer science (VLIE)

Resource Based Learning (ADA)

Rheological Boundary Layer - Physics

Rifled Breech-Loading - Gun

Right Buttock Line (MCD)

Rio Blanco Resources Ltd. - Vancouver Stock Exchange symbol

Robbins & Lawrence - NCIC firearms make code (NCIC)

Royal British Legion - British military (DMA)

Rubblestone - Technical drawings

Ruble - Monetary unit - Former USSR

Ruch Biblijny i Liturgiczny (BJA)