Lewis Short
(adjective) : vertĭcōsus (vort-), a, um, vertex, I.
* Full of whirlpools or eddies, eddying: mare, Sall. Fragm. ap. Serv. ad Verg. A. 1, 121 (Sall. H. 4, 22 Dietsch); cf. Sen. Q. N. 7, 8, 2: amnis,Liv. 21, 5, 15: fluvius,Amm. 14, 2, 9.
Charlton T. Lewis, Charles Short, A Latin Dictionary