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.
n. Any of several orchids, of the genera Lipara and Listera, that have a pair of basal leaves
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.
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.
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
Word Usage
"I have also received Liparis liliifolia, or twayblade, from this spot."