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1. (n.) ragweed
any of the composite plants of the genus Ambrosia, the airborne pollen of which is the most prevalent cause of autumnal hay fever.
Etymology: (1650–60; so called from its ragged appearance)
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| Definition of 'ragweed' |
Princeton's WordNet |
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1. (noun) ragwort, tansy ragwort, ragweed, benweed, Senecio jacobaea
widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
2. (noun) ragweed, ambrosia, bitterweed
any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
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| Definition of 'ragweed' |
Webster Dictionary |
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1. (noun) ragweed
a common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed
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Definitions of ragweed 
