To whirl round, or revolve, with a whizzing noise; to fly or more quickly with a buzzing or whizzing sound; to whiz.
- To move so as to produce a vibrating or buzzing sound.
- To cause to make a vibratory sound.
- A sound of buzzing or vibration: the whir of turning wheels.
- Excited, noisy activity; bustle: the whir of busy shoppers.