(adjective) : sub-terrānĕus, a, um, terra
* Underground, subterranean (class.): specus,Cic. Att. 15, 26, 4; cf.: supterraneos specus aperire,Tac. G. 16: ergastulum,Col. 1, 6, 3: structura,Plin. 36, 22, 50, § 170: regna,Juv. 2, 149: animalia,Pall. Sept. 3, 2: mures,Sen. Q. N. 3, 16, 3: subterraneis venis in mare defluunt,Plin. 9, 15, 20, § 53: domus,id. 36, 13, 19, § 88: cubiculum,Plin. Ep. 4, 11, 9: subterraneis dolis peractum urbis excidium,Flor. 1, 12 fin.—Subst.: sub-terrānĕum, i, n., a subterranean place: in ipso subterraneo semirotundo,App. M. 11, p. 260, 2.