Lewis & Short

Ĕrīnys (or, less correctly, Erinnys; cf. Wagner ad Verg. A. 2, 337), yos, f., = Ἐριννύς (Ἐρινύς),

  1. I. one of the Furies, Verg. A. 7, 447; 570; Ov. M. 1, 241; 4, 490; 11, 14 et saep.
    Acc. Erinyn, Ov. M. 1, 725.
    In plur.: Erinyes, the Furies, Prop. 2, 20, 29 (3, 13, 29 M.); Ov. H. 11, 103.
    Acc. Erinyas, Stat. Th. 11, 345.
  2. II. Transf.
    1. A. Of Helen: Trojae patriae communis Erinys, the scourge, curse, Verg. A. 2, 573.
    2. B. Appellatively, fury, frenzy, madness = furor, Verg. A. 2, 337: civilis, i. e. civil war, Luc. 4, 187.