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nodding trillium

noun
  1. a hardy plant, Trillium cernuum, of the lily family, of the eastern coast of North America, having wavy-petalled, white or pinkish flowers on short, recurved stalks hanging beneath the three whorled leaves.
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Origin of nodding trillium

An Americanism dating back to 1805–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018