Definition of "birr" in English

noun

1. (Scotland) strength, vigor, energy

2. (Scotland) The force of movement; rush, impetus, momentum, driving force

3. (Scotland) A whirring noise

4. (Scotland) A strong trilling.

verb

1. (Scotland) To make a whirring noise; make a noise like that of revolving wheels, or of millstones at work.

2. (Scotland) To lurch or set to spinning.

noun

1. The currency of Ethiopia, divided into 100 santims.