• WordNet 3.6
    • n silverweed low-growing perennial having leaves silvery beneath; northern United States; Europe; Asia
    • n silverweed any of various twining shrubs of the genus Argyreia having silvery leaves and showy purple flowers
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Webster's Revised Unabridged Dictionary
    • n Silverweed (Bot) A perennial rosaceous herb (Potentilla Anserina) having the leaves silvery white beneath.
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Century Dictionary and Cyclopedia
    • n silverweed A plant, Potentilla Anserina, having pinnate leaves covered beneath with silvery-silky down. It is a tufted herb, emitting runners which root at the nodes and send up peduncles bearing a single yellow flower. It is common in the northern Old World, and is found in marshes, on river-banks, etc., northward in North America.
    • n silverweed A plant of the convolvulaceous genus Argyreia, containing some 30 chiefly East Indian and Malayan species. They are climbing or rarely almost erect shrubs, bearing showy purple or rose-colored flowers with funnel-shaped corolla, and having the foliage often white-pubescent beneath.
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In literature:

In a dell carpeted with silverweed and wild mustard, we come across a nest of our persisting friend, the chipping sparrow.
"The New North" by Agnes Deans Cameron
The silverweed that covered the peaty soil between the road and ditch was not much crushed.
"Partners of the Out-Trail" by Harold Bindloss