ponto, ōnis, m. [1. pons].
I A kind of Gallic transport , a punt , Caes. B. C. 3, 29.—
II A floating bridge , a pontoon , Aus. Idyll. 12, 10; Dig. 8, 3, 38; Gell. 10, 25, 5.
pontō ōnis, m pons, a large flat boat , Cs. ...
An Elementary Latin Dictionary