A flat-bottomed boat or hollow metal cylinder used with others to support a temporary bridge or floating landing stage
The card game blackjack or vingt-et-un
A flat-bottomed boat used as a float to support a temporary bridge, etc.
An aeroplane fitted with pontoons enabling it to land on, and take off from, water; a seaplane.
A train of wagons carrying pontoons.
A bridge constructed on pontoons.