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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.

See Examples For:

They are, at the end of a Sunday night, high fantasy spectacles based on a fictional land with a complex history that was created by author George R.R.

From Salon Jun. 21, 2026

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

From Los Angeles Times Nov. 30, 2025

This is the same company that “brought back” the ice-age dire wolf with financial help from Game of Thrones author George R.R.

From Slate Aug. 8, 2025

A landmark event in “Fire & Blood,” author George R.R.

From Los Angeles Times Jun. 4, 2025

It covers the same ground as De R.R. iii.-v.

From The Student's Companion to Latin Authors by George Middleton

It also sits relatively far from the center of the Milky Way and contains an extraordinary population of RR Lyrae variable stars.

From Science Daily Jul. 5, 2026

Looking ahead: “The security of that steady paycheck gives consumers the confidence to keep spending,” said Chip West, retail strategist at business-advisory firm RR Donnelley.

From MarketWatch Jun. 4, 2026

Rolls-Royce RR 0.00%increase; green up pointing triangle increased shareholder returns with a multiyear share buyback program of up to around $12 billion and raised its targets for 2028 after earnings grew last year.

From The Wall Street Journal Feb. 26, 2026

The production, titled Game of Thrones: The Mad King, will be set 10 years before the events of the TV series and is based on new material from Game of Thrones creator George RR Martin.

From BBC Feb. 21, 2026

Flexibilia.—Dicyclica in which proximal brachials are incorporated in the dorsal cup, either by their own sides, or by interbrachials, or by a finely plated skin, but never rigidly; plates may occur between RR.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" by Various

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