Source : Webster's Revised Unabridged Dictionary (1913)

Wintergreen \Win"ter*green`\, n. (Bot.)
   A plant which keeps its leaves green through the winter.

   Note: In England, the name wintergreen is applied to the
         species of {Pyrola} which in America are called
         {English wintergreen}, and {shin leaf} (see Shin leaf,
         under {Shin}.) In America, the name wintergreen is
         given to {Gaultheria procumbens}, a low evergreen
         aromatic plant with oval leaves clustered at the top of
         a short stem, and bearing small white flowers followed
         by red berries; -- called also {checkerberry}, and
         sometimes, though improperly, {partridge berry}.

   {Chickweed wintergreen}, a low perennial primulaceous herb
      ({Trientalis Americana}); -- also called {star flower}.

   {Flowering wintergreen}, a low plant ({Polygala paucifolia})
      with leaves somewhat like those of the wintergreen
      ({Gaultheria}), and bearing a few showy, rose-purple
      blossoms.

   {Spotted wintergreen}, a low evergreen plant ({Chimaphila
      maculata}) with ovate, white-spotted leaves.

Source : WordNet®

wintergreen
     n 1: any of several evergreen perennials of the genus Pyrola
          [syn: {pyrola}]
     2: creeping shrub of eastern North America having white
        bell-shaped flowers followed by spicy red berrylike fruit
        and shiny aromatic leaves that yield wintergreen oil [syn:
         {teaberry}, {checkerberry}, {mountain tea}, {groundberry},
         {ground-berry}, {creeping wintergreen}, {Gaultheria
        procumbens}]
     3: spicy red berrylike fruit; source of wintergreen oil [syn: {boxberry},
         {checkerberry}, {teaberry}, {spiceberry}]