Lewis Short
āphractus | āphractum, i (noun F.n) : f., or , , n., = ἄφρακτος (uncovered, sc. ναῦς, hence)
* A long vessel without a deck (in pure Latin, navis aperta; only in Cic.): Navigavimus tardius propter aphractorum Rhodiorum imbecillitatem,Cic. Att. 5, 13, 1: detraxit viginti ipsos dies aphractus Rhodiorum,id. ib. 6, 8, 4: aphracta Rhodiorum habebam,id. ib. 5, 11, 4; so id. ib. 5, 12, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary