Definition of "swirl"

swirl

/swɜːl/

verb
third-person singular simple present swirls, present participle swirling, simple past and past participle swirled
1. (transitive, intransitive) To twist or whirl, as an eddy.
  Quotations
  The river swirled along.
  1857, Charles Kingsley, “(please specify the page)”, in Two Years Ago, volumes (please specify |volume=I to III), Cambridge, Cambridgeshire: Macmillan and Co.
  The contest was a lot more even in the second half, as the wind swirled around the Stadium of Light, but it took Craig Gardner's superb block to prevent Young getting on the scoresheet.
  2012 May 13, Alistair Magowan, “Sunderland 0-1 Man Utd”, in BBC Sport‎
2. To be arranged in a twist, spiral or whorl.
3. (figuratively) To circulate.
  Quotations
  Mr. Cameron had a respite Thursday from the negative chatter swirling around him when he appeared outside 10 Downing Street to denounce the murder a day before of a British soldier on a London street.
  2013 May 23, Sarah Lyall, “British Leader’s Liberal Turn Sets Off a Rebellion in His Party”, in New York Times, retrieved 29 May 2013
4. (African-American Vernacular, dated) To mingle interracially.
noun
plural swirls
1. A whirling eddy.
2. A twist or coil of something.
3. (fishing) The upward rushing of a fish through the water to take the bait.
4. (African-American Vernacular, dated) Interracial mingling (e.g. dating, sex, marriage, etc.).