Cudweed

from WordNet (r) 3.0 (2006)
cudweed
    n 1: any of numerous plants of the genus Gnaphalium having
         flowers that can be dried without loss of form or color
    2: any plant of the genus Filago having capitate clusters of
       small woolly flower heads [syn: {cotton rose}, {cudweed},
       {filago}]
    3: perennial cottony-white herb of southwestern United States
       [syn: {western mugwort}, {white sage}, {cudweed}, {prairie
       sage}, {Artemisia ludoviciana}, {Artemisia gnaphalodes}]
    
from The Collaborative International Dictionary of English v.0.48
Cudweed \Cud"weed`\ (k?d"w?d`), n. [Apparently fr. cud + weed,
   but perh. a corruption of cottonweed; or of cut weed, so
   called from its use as an application to cuts and chafings.]
   (Bot.)
   A small composite plant with cottony or silky stem and
   leaves, primarily a species of {Gnaphalium}, but the name is
   now given to many plants of different genera, as {Filago},
   {Antennaria}, etc.; cottonweed.
   [1913 Webster]
    

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