cypripedium

noun pl. cypripediums or cypripedia

1. any of a genus (Cypripedium) of soil-rooted orchids of the North Temperate Zone, with flat leaves and white, yellow, or rosy-purple flowers, each having a pouchlike lip petal; lady-slipper
2. any of various cultivated species (genus Paphiopedilum) of tropical orchids with fleshy, folded leaves and green, yellow, or brown-purple flowers of waxy texture