# birr

> English word · Noun · IPA /bɜː/ · frequency rank #84,030

## Definitions
1. Strength, vigor, energy.
2. The force of movement; rush, impetus, momentum, driving force.
3. A whirring noise.
4. A strong trilling.

## Etymology
From Middle English bir (“favorable or strong wind”), from Old English byre (“strong wind, storm”); cognate with Norwegian bør, Icelandic byrr (“sailing winds”), Albanian borë (“snow”), and Polish burza (“storm, thunderstorm”).

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