WHORL

Whorl

A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the ammonites.

The above text is a snippet from Wikipedia: Whorl (mollusc)
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whorl

Noun

  1. A pattern of concentric circles.
  2. A circle of three or more leaves, flowers, or other organs, about the same part or joint of a stem.
  3. A volution, or turn, of the spire of a univalve shell.
  4. A flywheel, a weight attached to a spindle, compare 1460.

Verb

  1. To form a pattern of concentric circles.


The above text is a snippet from Wiktionary: whorl
and as such is available under the Creative Commons Attribution/Share-Alike License.

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