This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A whirr, the sounds of a whirr.

v. Present participle of whir.

adj. like the sound of rapidly vibrating wings

n. sound of something in rapid motion

"While the Heidleberg appears to be printing an invitation, not a book, the sound of the gears whirring is a nice reminder of publishing's fine tradition."

whirred    whirring    whirrs    whirs   

emit    let out    let loose    utter    sound    go   

whir    whine    clink    clang    rumble    buzz    screech    thud    clack    thrum