cypripedium
noun
cyp·ri·pe·di·um ˌsi-prə-ˈpē-dē-əm 
1
: any of a genus (Cypripedium) of Eurasian and North American terrestrial orchids having large usually showy drooping flowers with the lip inflated or pouched compare lady's slipper
2
: any of a genus (Paphiopedalum) of widely cultivated Asian orchids
Word History
Etymology
New Latin, genus name, from Late Latin Cypris, a name for Venus + -pedium (modification of Greek pedilon sandal)
First Known Use
1807, in the meaning defined at sense 1