Source : Webster's Revised Unabridged Dictionary (1913)

Prejudice \Prej"u*dice\, v. t. [imp. & p. p. {Prejudiced}; p.
   pr. & vb. n. {Prejudicing}.] [Cf. F. pr['e]judicier. See
   {Prejudice}, n.]
   1. To cause to have prejudice; to prepossess with opinions
      formed without due knowledge or examination; to bias the
      mind of, by hasty and incorrect notions; to give an
      unreasonable bent to, as to one side or the other of a
      cause; as, to prejudice a critic or a juryman.

            Suffer not any beloved study to prejudice your mind
            so far as to despise all other learning. --I. Watts

   2. To obstruct or injure by prejudices, or by previous bias
      of the mind; hence, generally, to hurt; to damage; to
      injure; to impair; as, to prejudice a good cause.

            Seek how may prejudice the foe.       --Shak