Bias - sustany/dvg GitHub Wiki
A bias is to feel or show a pre-existing inclination or prejudice for or against someone or something.�
In the context of evidence in criminal law, bias is used to describe the relationship between a party and a witness which might lead the witness to unconsciously or otherwise, give testimony in favor of or against a party, as cited in the case of United States v. Slough 22 F.Supp.3d 29 (2014).