from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of numerous small terrestrial orchids of the genera Liparis and Listera, having usually two basal leaves and a terminal cluster of greenish or purplish flowers.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several orchids, of the genera Lipara and Listera, that have a pair of basal leaves
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of several orchidaceous plants which have only two leaves, as the species of Listera and of Liparis.
from The Century Dictionary and Cyclopedia
- n. Primarily, a European orchid, Listera ovata, a simple-stemmed plant a foot or more high, bearing a slender raceme of green flowers, and about six inches from the ground a single pair of broadly ovate leaves, to which the name refers.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia
- n. an orchid of the genus Liparis having a pair of leaves
Obsolete tway, two (short for Middle English twaine; see twain) + blade (translation of Medieval Latin bifolium, two-leaf).(American Heritage® Dictionary of the English Language, Fourth Edition)
Alteration of earlier twiblade as if tway + blade. (Wiktionary)