- a flat-bottomed boat
- any of a number of these, or of some other floating objects, as hollow cylinders, used as supports for a temporary bridge (pontoon bridge)
- either of two floats, as on the landing gear of some airplanes, for landing on water
Origin of pontoonFrench ponton ; from Classical Latin ponto ; from pons (gen. pontis), a bridge: see pons
Also ⌂ pon′ton
- A floating structure, such as a flatbottom boat, used to support a bridge.
- A floating structure serving as a dock.
- Either of two floating structures attached to a seaplane.
Origin of pontoonFrench ponton, from Old French, from Latin pont&omacron;, pont&omacron;n-, floating bridge, from p&omacron;ns, pont-, bridge; see pent- in Indo-European roots.
- (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.