ragweed

Noun
Synonyms: ragworttansy ragwortbenweedSenecio jacobaeaambrosiabitterweed

WordNet 3.0

Noun (2)

  1. widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantitySynonyms: ragworttansy ragwortbenweedSenecio 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 asthmaSynonyms: ambrosiabitterweed
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Webster's Dictionary (GCIDE)

Ragweed \Rag"weed`\ (r[a^]g"w[=e]d`), n. (Bot.) A common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed. [1913 Webster]

Great ragweed, a coarse American herb (Ambrosia trifida), with rough three-lobed opposite leaves. [1913 Webster]

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