Birr
Birr verb - Make a soft swishing sound.
Cite this Source
Whirr and Birr. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/birr/whirr
Birr & Whirr. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/birr/whirr>.
Whirr or Birr. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/birr/whirr.
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