melaena
  黑糞
  me·lae·na /məˈlɪnə/ 名詞
  黑糞症,黑吐症
  Me·lae·na n.  Med. A discharge from the bowels of black matter, consisting of altered blood.
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  melaena
       n : abnormally dark tarry feces containing blood (usually from
           gastrointestinal bleeding) [syn: melena]