Definition of 'cottonweed'

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Noun

1. American everlasting having foliage with soft wooly hairs and corymbose heads with pearly white bracts
      Synonyms: pearly everlasting Anaphalis margaritacea
2. any of various plants of the genus Froelichia found in sandy soils and on rocky slopes in warmer regions of America; grown for their spikes of woolly white flowers

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