purple silkweed: perennial of eastern North America having pink-purple flowers
milkweed: any of numerous plants of the genus Asclepias having milky juice and pods that split open releasing seeds with downy tufts
ethyl alcohol: the intoxicating agent in fermented and distilled liquors; used pure or denatured as a solvent or in medicines and colognes and cleaning solutions and rocket fuel; proposed as a renewable clean-burning additive to gasoline