1. to make a continuous low buzzing or vibrating sound

1. a continuous low buzzing or vibrating sound

Examples

• The helicopter blades began to whirr as the engine started.
• I could hear the fan whirr quietly in the corner of the room.
• The sewing machine whirred as she worked on the dress.
• The whirr of the air conditioner was barely audible.
• A sudden whirr from the printer indicated it was working again.
• The hummingbird’s wings whirr so fast they’re almost invisible.
• The whirr of machinery filled the factory floor.