Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any member of the genus Polygonella of knotweeds and smartweeds.

from the GNU version of the Collaborative International Dictionary of English

  • n. A slender, nearly leafless, American herb (Polygonum articulatum), with jointed spikes of small flowers.

from The Century Dictionary and Cyclopedia

  • n. Polygonum articulatum, an American plant: so called from its many-jointed spike-like racemes.
  • n. A. name of a species of Equisetum.
  • n. The mare's-tail, Hippuris vulgaris.

Etymologies

joint +‎ weed (Wiktionary)

Examples

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