screw augur

1 definition found

screw augur - WordNet (r) 2.1 (2005) :

  screw augur
      n 1: an orchid of the genus Spiranthes having tall erect densely
           flowered spiraling clusters of creamy white vanilla-scented
           flowers; widely distributed especially in low damp places
           of eastern and central North America [syn: screw augur,
           Spiranthes cernua]