Lewis Short
(adjective) : ferrātus, a, um, ferrum
* Furnished, covered, or shod with iron.
* Adj.: postes, Enn. ap. Serv. Verg. A. 7, 622 (Ann. v. 271 ed. Vahl.); imitated,Verg. A. 7, 622: orbes rotarum,Lucr. 6, 551; Verg. G. 3, 361: hasta,Liv. 1, 32, 12: sudes,Verg. A. 5, 208: capistra,id. G. 3, 399: calx,armed with a spur,id. A. 11, 714: servi, i. e. fettered (sc. catenis), Plaut. Bacch. 4, 6, 11; cf. the preced. art.: agmina,i. e. iron-clad, in armor,Hor. C. 4, 14, 30: aquae,ferruginous, chalybeate,Sen. Q. N. 3, 2: forma suum,iron, made of iron,Val. Fl. 6, 90.
* Subst.: ferrāti, ōrum, m. (sc. milites): in fronte statuerat ferratos, in cornibus cohortes,harnessed soldiers, cuirassiers,Tac. A. 3, 45.
Charlton T. Lewis, Charles Short, A Latin Dictionary