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Webster 1913 Edition

Noun.

(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.

wormseed ‎(plural wormseeds)