trifidus, a, um, adj. ter-findo, cleft or cloven into three parts, three-cleft, threeforked (poet. and mostly post-Aug.): hasta (Neptuni), Val. Fl. 1, 641; cf.: cuspis Neptuni, Claud. Rapt. Pros. 2, 181: flamma, i. e. lightning, Ov. M. 2, 325; cf. ardores, Val. Fl. 6, 53: viae Phocaeae, i. e. cross-roads, Sen. Oedip. 772; cf. Phocis, Stat. Th. 1, 64: lingua serpentis, Sen. Med. 687; cf.: motus linguae, Sil. 6, 222: rostrum prorae, id. 6, 358: Sicania, i. e. triangular, Claud. Cons. Mall. Theod. 203.