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plural polygonies
Any plant of the genus Polygonum, especially knotgrass. quotations examples
There, whether it diuine Tobacco were, / Or Panachæa, or Polygony, / She found, and brought it to her patient deare [...].
1590, Edmund Spenser, “Book III, Canto V”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie