any of various native, soil-inhabiting orchids (esp. genera Listera and Liparis) having opposite, paired leaves
Origin of twaybladearchaic tway, two ( Middle English twei, variant, variety of twene: see twain) + blade
Any of various small terrestrial orchids of the genera Liparis and Listera, having usually two basal leaves and a terminal cluster of greenish or purplish flowers.
Origin of twaybladeObsolete tway, two (short for Middle English twaine; see twain) + blade (translation of Medieval Latin bifolium, two-leaf).
- Any of several orchids, of the genera Lipara and Listera, that have a pair of basal leaves.
Alteration of earlier twiblade as if tway + blade.