lady's slipper also la·dy-slip·per (lādē-slĭp′ər)
n.
Any of various orchids of the subfamily Cypripedioideae and especially the genus Cypripedium, having showy flowers with the lip modified into a slipperlike pouch.Also called moccasin flower.
lady's slipperpink lady's slipper
Cypripedium acaule