Baton sinisters is a term used in heraldry to describe a diagonal line or band on a coat of arms that represents illegitimacy or dishonor. Synonyms for this term include bend sinisters, bastard stripes, diagonal bars, and illegitimate stripes. These terms are all used to describe the same symbol on a coat of arms that represents a stain on the family's reputation. While the use of coat of arms and heraldry has become less common in modern times, these terms still hold historical significance and provide insights into how families held onto their reputation and status throughout the ages.