I.a rock: “ex magnis rupibus nactus planitiem,” Caes. B. C. 1, 70: “cum (oppidum) ex omnibus in circuitu partibus altissimas rupes despectusque haberet,” id. B. G. 2, 29; cf. Liv. 32, 4; “and with this cf.: inter saxa rupesque,” id. 21, 40: “ex rupe Tarpeiā,” id. 7, 10: “Parnasia,” Verg. E. 6, 29: “aëria,” id. G. 4, 508: “ardua,” Ov. F. 5, 293; id. P. 1, 8, 51: “cavae,” caverns, grottos, Verg. G. 3, 253; so, “ima (Sibyllae),” id. A. 3, 443.—Of a cliff, Verg. A. 10, 693; Luc. 5, 514; Val. Fl. 3, 108; 4, 637; cf.: “personantibus et respondentibus inter se rupibus,” Just. 24, 6, 8.
rūpes , is (collat. form rūpa , ae, App. M. 6, p. 72 Hildebr. min.; cf. Gloss. Isid. p. 693),f. rumpo,