资料来源 : Webster's Revised Unabridged Dictionary (1913)

Purging \Pur"ging\, a.
   That purges; cleansing.

   {Purging flax} (Bot.), an annual European plant of the genus
      {Linum} ({L. catharticum}); dwarf wild flax; -- so called
      from its use as a cathartic medicine.