BIRR /bɜː/ Scrabble 6 Words With Friends 7 Definition verb make a soft swishing sound. — synonyms: whizz, whiz, whirr, whir, purr noun the basic unit of money in Ethiopia. noun sound of something in rapid motion. — synonyms: whir, whirr, whirring See all 4 words you can make from BIRR → 4-letter words Words starting with B Words ending with R ← Unscramble different letters