bitterweed
English Thesaurus
1. any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma (noun.plant)
| hypernym | : | weed, |
| definition | : | any plant that crowds out cultivated plants (noun.plant) |
| hyponym | : | ambrosia artemisiifolia, common ragweed, |
| definition | : | annual weed with finely divided foliage and spikes of green flowers; common in North America; introduced elsewhere accidentally (noun.plant) |
| member meronym | : | genus ambrosia, |
| definition | : | comprising the ragweeds; in some classification considered the type genus of a separate family Ambrosiaceae (noun.plant) |
2. widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States (noun.plant)
| hypernym | : | weed, |
| definition | : | any plant that crowds out cultivated plants (noun.plant) |
| member meronym | : | genus picris, picris, |
| definition | : | genus of weedy Old World yellow-flowered herbs usually containing a bitter-tasting substance: bitterweed (noun.plant) |
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