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

Prejudice \Prej"u*dice\, n. [F. pr['e]judice, L. praejudicium;
   prae before + judicium judgment. See {Prejudicate},
   {Judicial}.]
   1. Foresight. [Obs.]

            Naught might hinder his quick prejudize. --Spenser.

   2. An opinion or judgment formed without due examination;
      prejudgment; a leaning toward one side of a question from
      other considerations than those belonging to it; an
      unreasonable predilection for, or objection against,
      anything; especially, an opinion or leaning adverse to
      anything, without just grounds, or before sufficient
      knowledge.

            Though often misled by prejudice and passion, he was
            emphatically an honest man.           --Macaulay.

   3. (Law) A bias on the part of judge, juror, or witness which
      interferes with fairness of judgment.

   4. Mischief; hurt; damage; injury; detriment. --Locke.

            England and France might, through their amity, Breed
            him some prejudice.                   --Shak.

   Syn: Prejudgment; prepossession; bias; harm; hurt; damage;
        detriment; mischief; disadvantage.

Source : WordNet®

prejudice
     n : a partiality that prevents objective consideration of an
         issue or situation [syn: {bias}, {preconception}]
     v 1: disadvantage by prejudice
     2: influence (somebody's) opinion in advance [syn: {prepossess}]