| 1. | any orchid of the genus Cypripedium, the flowers of which have a protruding petal somewhat resembling a slipper: all species are reduced in numbers, some greatly. |
| 2. | any of several other related plants having similar flowers, as of the genera Paphiopedilum and Phragmipedium. |

| lady's slipper n. Any of various orchids of the genus Cypripedium, having usually solitary, variously colored flowers with an inflated, pouchlike lip. Also called moccasin flower. |