subterraneus

sub-terrānĕus, a, um, adj. [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.