Lewis Short
cautēs | cautĭs (noun F) : (e. g. Tib. 2, 4, 9: , Prud. στεφ. 10, 701), , kindr. with cōs, cōtis; Sanscr. s)ō, acuere, Bopp, Gloss. 353, 6
* A rough, pointed rock: saxa et cautes timere,Caes. B. G. 3, 13: celsae,Enn. Ann. 402 Vahl. ex conj.: durae,Verg. A. 4, 366; Ov. M. 4, 672; 7, 418: praerupta,id. ib. 1, 719: solida,id. ib. 12, 124: inviae,Plin. 37, 2, 10, § 27. —As a symbol of insensibility, Ov. M. 11, 330.
Charlton T. Lewis, Charles Short, A Latin Dictionary