Pronunciation: (milk'wēd"), [key]
1. any of several plants that secrete a milky juice or latex, esp. those of the genus Asclepias, as A. syriaca. Cf. milkweed family.
2. any of various other plants having a milky juice, as certain spurges.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.