winters bark

from The Collaborative International Dictionary of English v.0.48
Winter's bark \Win"ter's bark`\ (Bot.)
   The aromatic bark of tree ({Drimys Winteri} syn. {Drymis
   Winteri}) of the Magnolia family, which is found in Southern
   Chile. It was first used as a cure for scurvy by its
   discoverer, Captain John Winter, vice admiral to sir Francis
   Drake, in 1577.
   [1913 Webster]
    

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