Twayblade \Tway"blade`\, n. (Bot.) Any one of several orchidaceous plants which have only two leaves, as the species of {Listera} and of {Liparis}. [Written also {twyblade}.]
liparis n 1: an orchid of the genus Liparis having few leaves and usually fairly small yellow-green or dull purple flowers in terminal racemes 2: type genus of the Liparididae: snailfishes [syn: {genus Liparis}]