ἐνίοτε οἱ οἰκέται εἰς τὴν θάλασσαν ἐλαύνουσιν αὐτούς → sometimes the slaves ride them into the sea
in-căvo: āre, v. a.,I to hollow out, make hollow: aliquid, Col. 4, 25, 2.
incăvō, āre, tr., creuser : Col. Rust. 4, 25, 3.
in-cavo, āre, hohl machen, Colum. 4, 25, 2.