Source : Webster's Revised Unabridged Dictionary (1913)

Snowdrop \Snow"drop`\, n. (Bot.)
   A bulbous plant ({Galanthus nivalis}) bearing white flowers,
   which often appear while the snow is on the ground. It is
   cultivated in gardens for its beauty.

   {Snowdrop tree}. See {Silver-bell tree}, under {Silver}, a.

Source : WordNet®

snowdrop
     n : common anemone of eastern North America with solitary
         pink-tinged white flowers [syn: {wood anemone}, {Anemone
         quinquefolia}]