資料來源 : Webster's Revised Unabridged Dictionary (1913)

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}.]

資料來源 : WordNet®

twayblade
     n 1: orchid having a pair of ovate leaves and a long slender
          raceme of green flowers sometimes tinged red-brown;
          Europe to central Asia [syn: {Listera ovata}]
     2: an orchid of the genus Liparis having a pair of leaves