AskDefine | Define pontoon

Dictionary Definition



1 (nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge
2 a float supporting a seaplane

User Contributed Dictionary



  • /pɒnˈtuːn/
  • /pQn"tu:n/

Etymology 1

From Old French ponton, from Latin ponto (‘ferryboat’), from pons (‘bridge’).


  1. A flat-bottomed boat used as a support for a temporary bridge.
  2. A floating structure supporting a bridge or dock.
  3. A box used to raise a sunken vessel.
  4. A float of a seaplane.
support for a temporary bridge
floating structure supporting a bridge or dock
box used to raise a sunken vessel
float of a seaplane

Etymology 2

Probably from vingt-un, an obsolete variant of vingt-et-un, from French, literally ‘twenty-one’.


  1. In the context of "Card games": : A card game in which the object is to obtain cards whose value adds up to, or nearly to, 21 but not exceed it.

Extensive Definition

Pontoon may refer to:
pontoon in German: Ponton
pontoon in French: Ponton
pontoon in Icelandic: Flotholt
pontoon in Dutch: Ponton
pontoon in Japanese: ポンツーン
pontoon in Norwegian: Pontong
pontoon in Norwegian Nynorsk: Pontong
pontoon in Polish: Ponton
pontoon in Romanian: Ponton
pontoon in Swedish: Ponton
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