whir

Noun

whirr (plural whirrs)

1. A sibilant buzz or vibration; the sound of something in rapid motion.
   • As Jane turned from the telephone she heard the whirr of a motor. That would be the children coming home from school. The car called for them at the playground every afternoon at five.1930, Margaret Ayer Barnes, Years of Grace, Part III, Chapter III, page 305

   Synonyms:

   buzz, drone, hum, purr, whine, whistle, whizz

2. A bustle of noise and excitement.

   Synonyms:

   bustle, hustle

3. The vibrating sound made by a panther in its throat when contented.

See all 7 meanings of whirr