purgament

from The Collaborative International Dictionary of English v.0.48

Purgament \Pur"ga*ment\, n. [L. purgamentum offscourings,
   washings, expiatory sacrifice. See {Purge}.]
   1. That which is excreted; excretion. [Obs.]
      [1913 Webster]

   2. (Med.) A cathartic; a purgative. [Obs.] --Bacon.
      [1913 Webster]