Tartărus or -os, i, m., in plur. (on prosodial grounds): Tartăra, ōrum, n., = Τάρταρος, plur. Τάρταρα,
I the infernal regions , Tartarus (poet.; in prose, inferi); sing., Lucr. 3, 1012; Verg. A. 6, 577; Hor. C. 3, 7, 17; Stat. S. 2, 7, 116; plur., Lucr. 3, 42; 3, 966; 5, 1126; Verg. A. 4, 243; 6, 135; Hor. C. 1, 28, 10; Ov. M. 1, 113; 5, 371; 5, 423; 10, 21 et saep. al.—Personified: Tartarus pater, i. e. Pluto , Val. Fl. 4, 258.—Hence,
A Tartărĕus , a, um, adj., of or belonging to the infernal regions , Tartarean , infernal : tenebrica plaga, Cic. poët. Tusc. 2, 9, 22: antrum, i. e. the infernal regions , Luc. 6, 712: umbrae, Ov. M. 6, 676; 12, 257: custos, i. e. Cerberus , Verg. A. 6, 395: Acheron, id. ib. 6, 295: Phlegethon, id. ib. 6, 551: sorores, i. e. the Furies , id. ib. 7, 328; Stat. Th. 5, 66; hence, vox Alectus, Verg. A. 7, 514.—
B Tartărĭnus , a, um, adj., Tartarean , infernal; poet. for horrid , terrible : Tartarino cum dixit Ennius, horrendo et terribili Verrius vult accipi, a Tartaro, qui locus apud inferos, Fest. p. 359 Müll.: corpore Tartarino prognata Paluda virago, Enn. ap. Varr. L. L. 7, 37 ib.—Trop.: delator, Amm. 15, 6, 1.