1. making a whirring or buzzing sound; vibrating rapidly to produce a continuous sound
Usage: present participle of 'birr'

1. a whirring or buzzing sound
Usage: gerund form; the sound itself

Examples

• The hummingbird's wings were birring so fast they were almost invisible.
• I could hear the birring sound of the electric drill from the next room.
• The insect's birring grew louder as it flew closer.
• The motor was birring steadily throughout the operation.
• A birring noise came from the old refrigerator.
• The quail's wings made a distinctive birring sound as it took flight.