- [countable]
a temporary floating platform built across several boats or hollow structures, especially one used for tying boats to 浮码头；浮桥平台 - [countable]
a boat or hollow structure that is one of several used to support a floating platform or bridge （支撑浮桥的）浮筒，趸船 a pontoon bridge 浮桥
- (British English) (also blackjack British and North American English)[uncountable]
a card game in which players try to collect cards with a total value of 21 and no more 21 点纸牌游戏（玩者力争取得 21 点的总点数）
Word Originsense 3 early 20th cent.: probably an alteration of vingt-et-un ‘twenty-one’.senses 1 to 2 late 17th cent.: from French ponton, from Latin ponto, ponton-, from pons, pont- ‘bridge’.