In Roman law. A weigher or balance holder. The person who held a brazen balance in the ceremony of emancipation per ws et libram. Inst. 2, 10, 1. Librornnt appellatione continentnr omnia volumina, sive in charta, sive in membrana sint, sive in qnavis alia materia. Under the name of books are contained all volumes, whether upon paper, or parchment, or any other material. Dig. 32, 52, pr.