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  • R.R.
    R.R.
    abbreviation
    railroad.
  • RR
    RR
    abbreviation
    (in the US and Canada) railroad

R.R.

American  

abbreviation

  1. railroad.

  2. Right Reverend.

  3. rural route.


RR British  

abbreviation

  1. (in the US and Canada) railroad

  2. Right Reverend

  3. (in the US and Canada) rural route

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

How is it like to work with George R.R.

From Los Angeles Times • Feb. 22, 2026

Shortchanged viewers vociferously complained – including author and executive producer George R.R.

From Salon • Jan. 17, 2026

But as Tyrion Lannister, the wily hero of George R.R.

From Los Angeles Times • Nov. 30, 2025

What we’re really looking at, it seems, are gray wolves modified to be dire wolves of George R.R.

From Slate • Apr. 10, 2025

The press reports of the convention under date of June 12, said: Dr. R.R.

From Negro Migration during the War by Scott, Emmett J. (Emmett Jay)

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