Lewis & Short

1. Rōmŭlus, i, m., the founder and first king of Rome, worshipped after his death as Quirinus, Liv. 1, 4 sqq.; Cic. Div. 1, 12, 20; Sen. Ep. 108, 31.
Hence,

  1. A. Rōmŭlĕus (Romuleus, Auct. Perv. Ven. 72), a, um, adj., of or belonging to Romulus: ensis, Ov. F. 3, 67: urbs, Rome, id. ib. 5, 260: casa, Petr. Fragm. 21, 6; cf. Verg. A. 8, 654; Vitr. 2, 1: fera, the she-wolf, Juv. 11, 104 et saep.
  2. B. Rōmŭlus, a, um, adj., of Romulus: ficus, Ov. F. 2, 412: hasta, Prop. 4 (5), 4, 26: tellus, Roman, Verg. A. 6, 877; so, gens, Hor. C. 4, 5, 1; id. C. S. 47: facta, Sil. 13, 793.
  3. C. Rōmŭlāris, e, adj., of Romulus: ficus; v. Ruminalis: populus, Sid. Ep. 9, 13 in carm. 2 fin.
  4. D. Rōmŭlĭdae, ārum, m., the posterity of Romulus, the Romans, Lucr. 4, 683; Verg. A. 8, 638; Pers. 1, 31; Prud. adv. Symm. 1, 6.