sound of something in rapid motion;
"whir of a bird's wings"
"the whir of the propellers"
make a soft swishing sound;
"the motor whirred"
"the car engine purred"
make a vibrant sound, as of some birds
- The bird flew past, its wings whirring.
- The clock began to whirr before striking the hour.
- She heard nothing but the chirps and whirr of insect.
The..marsh-birds rose again..with a simultaneous whirr.出自： R. L. Stevenson
The only sound is the whirr of moving-picture cameras.出自： J. Cheever
Bats were whirring about.出自： R. K. Narayan