Source : Webster's Revised Unabridged Dictionary (1913)

Leech \Leech\, v. t. [imp. & p. p. {Leeched} (l[=e]cht); p. pr.
   & vb. n. {Leeching}.]
   1. To treat as a surgeon; to doctor; as, to leech wounds.
      [Archaic]

   2. To bleed by the use of leeches.