screw augur

Noun screw augur has 1 sense

• screw augur(n = noun.plant) spiranthes cernua - 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; Array
is a member of genus spiranthes, spiranthes
is a kind of ladies' tresses, lady's tresses