Source : Webster's Revised Unabridged Dictionary (1913)

Winter's bark \Win"ter's bark`\ (Bot.)
   The aromatic bark of tree ({Drimys, or Drymis, Winteri}) of
   the Magnolia family, which is found in Southern Chili. It was
   first used as a cure for scurvy by its discoverer, Captain
   John Winter, vice admiral to sir Francis Drake, in 1577.