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
The sunshade on her stroller had gotten twisted around its thin chrome bars, reminding me of the pontoon that had been torn off. Stephen King, The Atlantic, 15 May 2026 The all-season lakefront resort offers family-friendly amenities and activities like weekend campfires with s’mores, pontoon boat charters, lawn games, and watercraft rentals. Beth Luberecki, USA Today, 6 May 2026 Rent a pontoon, kayak, or paddleboard to explore the lakes, or float a gentle stretch of the Ottertail River with Charlie’s Ottertail Tubing. Taryn Shorr-McKee, Midwest Living, 4 May 2026 Home furnishing aside, High Point also boasts art galleries, trendy dining halls, and breweries worth checking out, as well as a beautiful lake that's ideal for kayaking, paddleboarding, or taking a tour on a pontoon boat. Lydia Mansel, Southern Living, 1 May 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 21 May. 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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