2.[countableC]TT one of two hollow metal containers fastened to the bottom of a plane so that it can come down onto water and float 〔使飞机可在水上降落的〕浮筒
3.[uncountableU]British EnglishBrEDGC a card game, usually played for money 〔通常用来赌钱的〕二十一点牌戏SYN American English blackjack
Examples from the Corpus
pontoon• Only some sailors in blue jerseys who appeared as the Shirley chugged alongside the boardingpontoon.• Lastly to make the picture more realistic, some crew are placed on board, and on the floating pontoons.• Then he got me and two more drivers to go into his room for a hand of pontoon.• The emptynetwork of pontoonsstretched across the river like floating railway lines.• Again the pontoonsrefused to rise from the water.• There was not enough wind, and as Elmer had said, the pontoonsacted like a dimestuck to the table.• The solution he came up with was to use pontoons instead of wheels.
Originpontoon
(1600-1700)Frenchponton“floating bridge”, from Latinponto, from pons“bridge”