English noun: bitterweed |
1. | bitterweed (plant) widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States |
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| Synonyms | bristly oxtongue, bugloss, oxtongue, Picris echioides |
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| Broader (hypernym) | weed |
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| Member meronym | genus Picris, Picris |
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2. | bitterweed (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, ragweed |
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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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