bitterweed | ||
1. | [ noun ] (botany) widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States | |
Synonyms: | bristly_oxtongue bugloss Picris_echioides oxtongue | |
Related terms: | weed Picris | |
2. | [ noun ] (botany) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | |
Synonyms: | ambrosia ragweed | |
Related terms: | weed common_ragweed western_ragweed great_ragweed genus_Ambrosia | |
Similar spelling: |
butterweed bitterwood battered bitter_dock bitterroot |