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 tree
     n : medium-sized tree of West Virginia to Florida and Texas
         [syn: {silver-bell tree}, {silverbell tree}, {opossum
         wood}, {Halesia carolina}, {Halesia tetraptera}]