Meaning of pontoon

pon•toon

Pronunciation: (pon-tn'), [key]
— n.
  1. a boat or some other floating structure used as one of the supports for a temporary bridge over a river.
  2. a float for a derrick, landing stage, etc.
  3. a float for raising a sunken or deeply laden vessel in the water; a camel or caisson.
  4. a seaplane float.

pon•toon

Pronunciation: (pon-tn'), [key]
— n. Brit.
  1. the card game twenty-one.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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