Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun bitterweed

2 senses of bitterweed

Sense 1
oxtongue, bristly oxtongue, bitterweed, bugloss, Picris echioides -- (widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States)
       => weed -- (any plant that crowds out cultivated plants)

Sense 2
ragweed, ambrosia, bitterweed -- (any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma)
       => weed -- (any plant that crowds out cultivated plants)