One entry found for
pontoon.
Main Entry:
pon·toon 
Pronunciation:
pän-
tün
Function:
noun
Etymology: from French
ponton "a floating bridge, punt," from Latin
ponton-, ponto (same meaning), from
pont-, pons "bridge" --related to
1PUNT
1 : a flat-bottomed boat
2 : a float used in building a floating bridge
3 : a float of an airplane
[pontoon illustration]