pontoon

Meanings

1. A flat-bottomed boat or other floating structure used as a buoyant support for a temporary bridge, dock or landing stage.
2. A bridge with floating supports.
3. A box used to raise a sunken vessel.
4. A float of a seaplane.
5. A lighter or barge used for loading or unloading ships.

1. A card game in which the object is to obtain cards whose value adds up to, or nearly to, 21 but not exceed it.

Etymology

Borrowed from Middle French ponton, from Old French ponton, from Latin pontō, pontōnem (“ferryboat”), from pōns (“bridge”).