Orichalcum, orichalci, n. g. Cic.Latten or copper mettall.
Lewis and Short: Latin dictionary
ŏrĭchalcum (also erroneously written aurĭchalcum, as if from aurum), i, n., = o)rei/xalkos, yellow copper ore, also the brass made from it. I.Lit., Cic. Off. 3, 23, 92; Hor. A. P. 202: album, Verg. A. 12, 87.—It was highly prized by the ancients, Plaut. Curc. 1, 3, 46; id. Mil. 3, 1, 61; id. Ps. 2, 3, 22; cf. Plin. 34, 2, 2, 4 (al. aurichalci). —II.Transf., of brass implements.—So of a brazen tuba, Val. Fl. 3, 61.—Of arms of brass, Stat. Th. 10, 660.