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What does RRB stand for?

RRB stands for Railroad Business (mail)

This definition appears somewhat frequently and is found in the following Acronym Finder categories:

  • Military and Government
  • Business, finance, etc.

See other definitions of RRB

Other Resources:
We have 45 other meanings of RRB in our Acronym Attic

Samples in periodicals archive:

They let others take customers away from them because they assumed themselves to be in the railroad business rather than in the transportation business.