Source : Webster's Revised Unabridged Dictionary (1913)

Bleeder \Bleed"er\, n. (Med.)
      (a) One who, or that which, draws blood.
      (b) One in whom slight wounds give rise to profuse or
          uncontrollable bleeding.

Source : WordNet®

bleeder
     n : someone who has hemophilia and is subject to uncontrollable
         bleeding [syn: {hemophiliac}, {haemophiliac}, {hemophile},
          {haemophile}]