bitterweed
| 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, ragweed |
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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 with spiny tongue-shaped leaves and yellow flowers; naturalized in United States |
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Synonyms: Picris echioides, bristly oxtongue, bugloss, oxtongue |
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Related Words: weed |
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