1. the basic monetary unit of Ethiopia
2. a whirring sound
Usage: archaic

1. to make a whirring sound
Usage: archaic

Examples

• The exchange rate was fifty birr to one dollar.
• She paid twenty birr for the coffee.
• The Ethiopian birr has fluctuated against major currencies.
• The old mill wheel made a steady birr as it turned.
• The machinery began to birr as it started up.
• A birr of insects filled the evening air.