英和和英

語源 1

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

名詞

pontoon (plural pontoons)

1. A flat-bottomed boat or other floating structure used as a buoyant support for a temporary bridge, dock or landing stage.
   • 1959 May, L. T. C. Rolt, “Centenary of the Royal Albert Bridge at Saltash”, in Railway Magazine, page 310:

     Thanks to the previous experience of the chief performers, to careful preparation and rehearsal, and to perfect weather conditions, they watched in breath-bated silence the spectacle of the huge bulk moving without a hitch into position over the temporary pier caps on which it settled as water ballast was admitted to the pontoons.

2. (by extension) A bridge with floating supports.

   Synonym: pontoon bridge

3. A box used to raise a sunken vessel.

   Near-synonyms: caisson, camel, sea camel

4. A float of a seaplane.
5. A lighter or barge used for loading or unloading ships.

派生語

語源 2

Probably from vingt-un, an obsolete variant of vingt-et-un (“twenty-one”), from French.

名詞

pontoon (uncountable)

1. (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.

   Synonym: vingt-et-un

参考

• baccarat
• blackjack
• twenty-one