ragweed

Plural: ragweeds

Noun

• A common weedy plant, often causing allergies.
• widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
• any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
• A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen which people with hay fever are allergic to.
• A mock-cypress (Bassia scoparia).

Examples

• He hoped to clear the board of ragweed words and play something significant.

Synonyms

ambrosia, benweed, bitterweed, ragwort, Senecio jacobaea, tansy ragwort