Sa·cher–Ma·soch \ˈzäḵ-ər-ˈmäz-ȯḵ\ , Leopold von (1836–1895), Austrian novelist. Sacher-Masoch is most famous for his erotic novels. In these novels the characters dwell at length on sexual pleasure derived from pain. The subject matter reflects Sacher-Masoch's personal life. He had two wives and several mistresses with whom he acted out the sexual fantasies described in his fictional works. By 1893 masochism was an established medical term.