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