R.R.

American

abbreviation

railroad.
Right Reverend.
rural route.

RR British

abbreviation

(in the US and Canada) railroad
Right Reverend
(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.

The second episode of “A Knight of the Seven Kingdoms,” HBO’s adaptation of George R.R.

From Los Angeles Times • Jan. 25, 2026

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

From Los Angeles Times • Nov. 30, 2025

The argument of training as copyright infringement has managed to advance there as of Monday, thanks to output from ChatGPT that appeared to be mighty similar to George R.R.

From Slate • Nov. 3, 2025

People who played “The Last of Us” knew what was coming in the same way anyone who read George R.R.

From Salon • May 19, 2025

Better to illustrate these points, we reproduce a paragraph from an article by Mr. R.R.

From Writing the Photoplay by Esenwein, J. Berg (Joseph Berg)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023