Origin: ME (Northern) quirren, prob. < Scand, as in Dan hvirre, Norw kvirra, akin to ON hverfa, to turn: for IE base see wharf
See whir in American Heritage Dictionary 4
verb whirred whirred, whir·ring, whirs verb, intransitive
Origin: Middle English whirren
Origin: , probably of Scandinavian origin.
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