[ noun ] rank-smelling tropical American pigweed <noun.plant>
Wormseed \Worm"seed`\, n. (Bot.) Any one of several plants, as {Artemisia santonica}, and {Chenopodium anthelminticum}, whose seeds have the property of expelling worms from the stomach and intestines.
{Wormseed mustard}, a slender, cruciferous plant ({Erysinum cheiranthoides}) having small lanceolate leaves.