inconspicuus
From LSJ
τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
Latin > English (Lewis & Short)
in-conspĭcŭus: a, um, adj.,
I not conspicuous, not remarkable ( = inglorius, ignobilis; post-Aug.): mors, Flor. 4, 2, 67.—
II Invisible: stella, Mart. Cap. 8, § 838; id. 6, § 593.