/werrm"seed'/ , n.
1. the dried, unexpanded flower heads of a wormwood, Artemisia cina (Levant wormseed) , or the fruit of certain goosefoots, esp. Chenopodium anthelminticum (or C. ambrosioides ), the Mexican tea or American wormseed, used as an anthelmintic drug.
2. any of these plants.
[ 1350-1400; ME wyrmsed. See WORM, SEED ]