mare's-tail Hear it!

mare's-tail definition

mare's·-tail (-tāl′)

noun

  1. long, narrow formations of cirrus cloud somewhat like a horse's tail in shape, supposed to be a sign of changes in the wind
  2. the only species (Hippuris vulgaris) of an aquatic family (Hippuridaceae, order Callitrichales) of plants with tiny flowers and narrow, hairlike leaves growing in thick whorls around the slender, erect stems

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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