pontoon

1 of 2

noun (1)

pon·​toon pän-ˈtün How to pronounce pontoon (audio)
Synonyms of pontoonnext
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

pontoon

2 of 2

noun (2)

British

Examples of pontoon in a Sentence

Recent Examples on the Web
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Noun
Captain An Electric Boat Around Morro Bay Estero Adventures rents quiet electric pontoon boats that visitors operate themselves. David Hochman, Forbes.com, 26 June 2026 But nature is the real reason people step on his pontoon. John Lauritsen, CBS News, 25 June 2026 Gear is provided, and the expert guides will navigate the pontoons, put the bait on the hook, and take the fish off for you. Jacqueline Dole, Southern Living, 23 June 2026 Anyone who prefers a slower pace will enjoy renting a pontoon boat, kayaks, canoes, or stand-up paddleboards. Lydia Mansel, Travel + Leisure, 19 June 2026 See All Example Sentences for pontoon

Word History

Etymology

Noun (1)

French ponton, from Old French, from Latin ponton-, ponto

Noun (2)

perhaps alteration of vingt-et-un

First Known Use

Noun (1)

1676, in the meaning defined at sense 1

Noun (2)

circa 1917, in the meaning defined above

Time Traveler
The first known use of pontoon was in 1676

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Cite this Entry

“Pontoon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pontoon. Accessed 29 Jun. 2026.

Kids Definition

pontoon

noun
pon·​toon
pän-ˈtün
1
: a flat-bottomed boat
2
: a float used in building a floating bridge
3
: a float of an airplane
Etymology

Noun

from French ponton "a floating bridge, punt," from Latin ponton-, ponto (same meaning), from pont-, pons "bridge" — related to punt entry 1

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