Source : Webster's Revised Unabridged Dictionary (1913)

Dryas \Dry"as\, n.; pl. {Dryades}. [L. See {Dryad}.] (Class.
   Myth.)
   A dryad.

Source : WordNet®

dryades
     See {dryad}

dryad
     n : a deity or nymph of the woods [syn: {wood nymph}]
     [also: {dryades} (pl)]