Lewis & Short

Mānīlĭus, a, name of a Roman gens. So,

    1. 1. C. Manilius, a tribune of the people A. U. C. 687, Cic. Imp. Pomp. 24, 69; Q. Cic. Pet. Cons. 13, 51.
    2. 2. A. Manilius, the astronomer and poet, author of the poem Astronomica.
    3. 3. In fem.: * Mānīlĭa, ae, a courtesan, Juv. S. 6, 243.
      Hence,
  1. A. Mānīlĭus, a, um, adj., of or belonging to a Manilius, Manilian: lex, of C. Manilius, according to which the chief command against Mithridates was given to Pompey, Cic. Or. 29, 102; id. Mur. 23, 47.
  2. B. Mā-nīlĭānus, a, um, adj., Manilian: leges, respecting the sale of slaves, probably introduced by M’. Manilius Nepos (consul A. U. C. 605), Cic. de Or. 1, 58, 246.