What does CALUMNIA mean? March 24, 2017 All Dictionary CALUMNIA meaning in Law Dictionary within the civil-law. Calumny, malice, or ill design; a false accusation ; a malicious prosecution. Lanning v. Christy, 30 Ohio St. 115, 27 Am. Rep. 431. When you look at the old common law. A claim, demand, challenge to jurors.