LIBEL Copy link • LIBEL 1. s. libellus famosus; libellus ad infamiam alicujus editus. If it is verse, Vid: LAMPOON. To publish a libel against anybody; Vid: To LIBEL. 2. v. libellum ad infamiam alicujus edere (Suet.); aliquem scriptis procacibus diffamare (Tac.); carmen probrosum facere in aliquem; malum carmen condere in aliquem (Hor.; these two if the libel is in verse).