1. The basic unit of money in Ethiopia; equal to 100 cents
   "The souvenir cost 50 birr"
    
2. Sound of something in rapid motion
   "The birr of hummingbird wings was barely audible";
   - whir, whirr, whirring

1. Make a soft swishing sound
   "the motor birred";
   - whizz, whiz, whirr, whir, purr

Sounds like: burr, bur

Derived forms: birred, birring, birrs

Type of: Ethiopian monetary unit, go, sound

Encyclopedia: Birr, King's County