iron (subs.) Copy link Outline I. The metalII. An implement of ironIII. Only in pl. = fetters • iron (subs.): I. The metal: ferrum: Caes.: Cic.: Virg. Made of i., ferreus (v. foll. art.): shod or tipped with i., ferrātus, Lucr.: Liv.: i.-mines, ferraria metalla, Plin. 34, 14, 41; also, ferrariae, arum (including the i.-works): Caes. B. G. 7, 22: Liv. II. An implement of iron: ferrum: cf. Virg. Aen. 10, 100, where it is used of curling-irons. III. Only in pl. = fetters: vincŭla, compĕdes: v. chain, fetter.