WordWeb Online

1. Sound of something in rapid motion
   - whir, whirring, birr

1. Make a soft swishing sound
   "the motor whirred";
   - whizz, whiz, whir, birr, purr
    
2. Make a vibrant sound, as of some birds
   - churr, chirr

Sounds like: weld, welled, whir

Derived forms: whirred, whirring, whirrs

Type of: emit, go, let loose, let out, sound, utter

Encyclopedia: Whirr