English noun: ragweed |
1. | ragweed (plant) widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity |
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| Synonyms | benweed, ragwort, Senecio jacobaea, tansy ragwort |
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| Broader (hypernym) | weed |
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| Member meronym | genus Senecio, Senecio |
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2. | ragweed (plant) 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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| Synonyms | ambrosia, bitterweed |
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| Broader (hypernym) | weed |
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| Narrower (hyponym) | Ambrosia artemisiifolia, Ambrosia psilostachya, Ambrosia trifida, common ragweed, great ragweed, perennial ragweed, western ragweed |
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| Member meronym | genus Ambrosia |
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