mare's-tail

See also: mare's tail

English

Noun

mare's-tail (plural mare's-tails or mares'-tails)

  1. A long streaky cloud, spreading out like a horse's tail, and believed to indicate rain; a cirrus cloud.
  2. Any aquatic plant of the genus Hippuris, having narrow leaves in whorls.
    1. especially, common mare's tail (Hippuris vulgaris)
  3. Erigeron canadensis (syn. Conyza canadensis), an annual weed.
    Synonyms: horseweed, Canadian fleabane
  4. Equisetum, a fern ally.
    Synonyms: horsetail, pipeweed

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