Purpura /(?)/

Pur·pu·ra

Purpura

n.
  1. A disease characterized by livid spots on the skin from extravasated blood, with loss of muscular strength, pain in the limbs, and mental dejection; the purples. (Med.)
  2. A genus of marine gastropods, usually having a rough and thick shell. Some species yield a purple dye. (Zool.)