The Collaborative International Dictionary of English v.0.48:
Prejudice \Prej"u*dice\, v. t. [imp. & p. p. Prejudiced; p.
pr. & vb. n. Prejudicing.] [Cf. F. pr['e]judicier. See
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