Definitions for ragweedˈrægˌwid

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Random House Webster's College Dictionary

rag•weedˈrægˌwid(n.)

  1. any of the composite plants of the genus Ambrosia, the airborne pollen of which is the most prevalent cause of autumnal hay fever.

    Category: Plants

Origin of ragweed:

1650–60; so called from its ragged appearance

Princeton's WordNet

  1. ragwort, tansy ragwort, ragweed, benweed, Senecio jacobaea(noun)

    widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity

  2. ragweed, ambrosia, bitterweed(noun)

    any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma

Wiktionary

  1. ragweed(Noun)

    A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen which people with hay fever are allergic to.

Webster Dictionary

  1. Ragweed(noun)

    a common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed


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