hollow/hollowed out; concave/curving inward; arched
Latin word, found 25 times in the texts on Socratos.
Cicero, De Natura Deorum 2.98: … adde huc fontum gelidas perennitates, liquores perlucidos amnium, riparum vestitus viridissimos, speluncarum concavas altitudines, saxorum asperitates, inpendentium montium altitudines inmensitatesque camporum; adde etiam recon …
Vergil, Georgics 4.49: aut ubi odor caeni gravis aut ubi concava pulsu
Ovid, Amores 3.6.4: Concava traiecto cumba rudente vehat.
All forms of concavus