# RR

> English word · Noun · frequency rank #17,232

## Definitions
1. Initialism of railroad.
2. Initialism of road race.
3. Abbreviation of rear, where brevity is desired.
4. Initialism of right rear, a location in a square or rectangular layout such as the tires on an automobile or the heating elements on a stovetop.
5. Initialism of Rolls-Royce.
6. Initialism of reverse racism.
7. Initialism of real reality.
8. Initialism of relative risk.
9. Initialism of rural route used when addressing mail.
10. Initialism of Riva-Roccin, a blood pressure measurer device.
11. Initialism of role reversal.
12. Initialism of resource record.

## Easily confused with
- **RS** (https://plainspell.com/en/vs/rr-vs-rs)
- **RT** (https://plainspell.com/en/vs/rr-vs-rt)
- **RV** (https://plainspell.com/en/vs/rr-vs-rv)
- **RW** (https://plainspell.com/en/vs/rr-vs-rw)
- **run** (https://plainspell.com/en/vs/rr-vs-run)
- **rub** (https://plainspell.com/en/vs/rr-vs-rub)
- **rug** (https://plainspell.com/en/vs/rr-vs-rug)
- **rum** (https://plainspell.com/en/vs/rr-vs-rum)
- **rue** (https://plainspell.com/en/vs/rr-vs-rue)
- **rye** (https://plainspell.com/en/vs/rr-vs-rye)
- **RSS** (https://plainspell.com/en/vs/rr-vs-rss)
- **RSA** (https://plainspell.com/en/vs/rr-vs-rsa)
- **rut** (https://plainspell.com/en/vs/rr-vs-rut)
- **Rus** (https://plainspell.com/en/vs/rr-vs-rus)
- **RTD** (https://plainspell.com/en/vs/rr-vs-rtd)
- **RSI** (https://plainspell.com/en/vs/rr-vs-rsi)
- **RSL** (https://plainspell.com/en/vs/rr-vs-rsl)
- **RTC** (https://plainspell.com/en/vs/rr-vs-rtc)
- **RTA** (https://plainspell.com/en/vs/rr-vs-rta)
- **Rua** (https://plainspell.com/en/vs/rr-vs-rua)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/rr