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ragweedmore about ragweed

ragweed


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Ragweed  \Rag"weed\,  n.  (Bot.) 
  A  common  American  composite  weed  ({Ambrosia 
  artemisi[ae]folia})  with  finely  divided  leaves;  hogweed. 
 
  {Great  ragweed},  a  coarse  American  herb  ({Ambrosia  trifida}), 
  with  rough  three-lobed  opposite  leaves. 
 
  From  WordNet  r  1.6  [wn]: 
 
  ragweed 
  n  1:  widespread  European  weed  having  yellow  daisylike  flowers; 
  sometimes  an  obnoxious  weed  and  toxic  to  cattle  if 
  consumed  in  quantity  [syn:  {ragwort},  {tansy  ragwort},  {benweed}, 
  {Senecio  jacobaea}] 
  2:  any  of  numerous  chiefly  North  American  weedy  plants 
  constituting  the  genus  Ambrosia  that  produce  highly 
  allergenic  pollen  responsible  for  much  hay  fever  and 
  asthma  [syn:  {ambrosia},  {bitterweed}] 




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