iron (adj.) Copy link • iron (adj.): ferreus: i.-hooks, f. hami, Caes. B. G. 7, 73, extr.: Plin. Fig.: the i. shower (of missiles), f. imber, Enn.: "the field all i." (Milt.), f. ager, Virg. Aen. 11, 601: of almost i. strength of body, ferrei prope corporis, Liv. 39, 40, fin. See also iron-hearted.