Dictionary.com
Thesaurus.com
Jump to:
  • 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.

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 stage prequel will tell an original story, based on new material from author and executive producer George RR Martin.

From BBC • Feb. 18, 2026

The items on RR Auction feature colorful clip-on bow ties from Jobs’ bedroom closet.

From Los Angeles Times • Jan. 13, 2026

Rolls-Royce RR -0.30%decrease; red down pointing triangle said strong demand across all its business areas means it is on track to meet its full-year targets.

From The Wall Street Journal • Nov. 13, 2025

Calor æstivus, jam desinente mense Junio, nimius est, et de die in diem intolerabilior crescit; unde RR.

From Letters From Rome on the Council by D?llinger, Johann Joseph Ignaz von

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.