Lewis & Short

īnō, ūs, f. (Ino, ōnis, Hyg. Fab. 2),

  1. I. daughter of Cadmus and Harmonia, sister of Semele, wife of Athamas king of Thebes, nurse of Bacchus, mother of Learchus and Melicerta, and step-mother of Phrixus and Helle. Being pursued by Athamas, who had become raving mad, she threw herself with Melicerta into the sea, whereupon they were both changed into sea-deities. Ino, as such, was called Matuta (Gr. Leucothea), and Melicerta Palaemon or Portumnus, Cic. Tusc. 1, 12, 28; Ov. M. 4, 416 sq.; id. F. 6, 485; Hor. A. P. 123 al.; cf. Preller’s Gr. Mythol. 1, p. 377 sq.
    Hence,
  2. II. Īnōŭs, a, um, adj., of or belonging to Ino: Melicerta, Verg. G. 1, 437; cf. Palaemon, id. A. 5, 823: sinus, Ov. M. 4, 497: pectus, Stat. S. 2, 1, 98: doli, Ov. A. A. 3, 176: arae, where Ino wished to sacrifice Phrixus, Val. Fl. 1, 521: undae, where Ino threw herself into the sea, id. ib. 2, 608: Isthmus, where games were celebrated by Athamas in honor of Ino, Stat. S. 4, 3, 60: Lechaeum, a promontory of the isthmus just mentioned, id. ib. 2, 2, 35.