The Collaborative International Dictionary of English v.0.48:
Macleaya \Macleaya\, prop. n. (Bot.) A genus of East Asian perennial herbs including the plume poppy. [WordNet 1.5]WordNet (r) 3.0 (2006):
Macleaya n 1: a perennial herb of eastern Asia: plume poppy [syn: Macleaya, genus Macleaya]