Part of speech: Noun
(nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge
Categories: Barge, Flatboat, Hoy, Lighter
Part of speech: Noun
a float supporting a seaplane
Categories: Float
The word "pontoon" comes from Latin ponto, which comes from Old French ponton, which was borrowed from Middle French ponton.
vingt-un – A related word in the same word family.
vingt-et-un – A related word in the same word family.
Latin became the scholarly language of Europe for over 1,500 years, standardizing technical vocabulary.