Definition of pontoon
1 : a flat-bottomed boat (such as a lighter); especially : a flat-bottomed boat or portable float used in building a floating temporary bridge
2 : a float especially of a seaplane
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Origin and Etymology of pontoon
French ponton, from Old French, from Latin ponton-, ponto
Origin and Etymology of pontoon
perhaps alteration of vingt-et-un
PONTOON Defined for Kids
pontoon
playDefinition of pontoon for Students
: a large hollow container filled with air and used to make something (as a boat, plane, or bridge) float
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See words that rhyme with pontoon Spanish Central: Translation of pontoon Nglish: Translation of pontoon for Spanish speakers
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