Word Study
twayblade
CIDE DICTIONARY
twayblade, n.
Any one of several orchidaceous plants which have only two leaves, as the species of Listera and of Liparis . [1913 Webster]
OXFORD DICTIONARY
twayblade, n. any orchid of the genus Listera etc., with green or purple flowers and a single pair of leaves.
Etymology
tway var. of TWAIN + BLADE
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