The Collaborative International Dictionary of English v.0.48:

Malepractice \Male*prac"tice\, n.
   See Malpractice.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Malpractice \Mal*prac"tice\, n. [Mal- + practice.]
   Evil practice; illegal or immoral conduct; practice contrary
   to established rules; specifically, the treatment of a case
   by a surgeon or physician in a manner which is contrary to
   accepted rules and productive of unfavorable results.
   [Written also malepractice.]
   [1913 Webster]