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

2 senses of ragweed

Sense 1
ragwort, tansy ragwort, ragweed, benweed, Senecio jacobaea -- (widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity)
       => 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)