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
Guests also have access to a community pool and clubhouse, plus practical perks like an EV charger and dockside pontoon rentals. Bailey Berg, Architectural Digest, 8 Apr. 2026 Or head out on the river on your own with a pontoon from Stillwater Boat Rentals or Ole Sawmill Marina. Ginger Crichton, Midwest Living, 2 Apr. 2026 Florida deputies rushed to save the lives of nearly a dozen people who were tossed into the water off the Fort Myers coast when their pontoon boat overturned, and the dramatic rescue was caught on video. Steven Yablonski, CBS News, 26 Mar. 2026 Show visitors can browse a wide variety of craft, including bowriders, center consoles, deck boats, flats boats, pontoons and surf boats. Patrick Connolly, The Orlando Sentinel, 25 Mar. 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

Browse Nearby Words

Cite this Entry

“Pontoon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pontoon. Accessed 12 Apr. 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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