ton/tʌn; tʌn/n [C]1 a unit for measuring weight, equal to 2240 pounds or 1016 kilos in Britain, and 2000 pounds in the US [→ tonne] 英吨﹔美吨〔重量单位﹐1 英吨等于 2240 磅或 1016 公斤﹐1 美吨等于 2000 磅〕2 tons of sthinformal a lot【非正式】大量的…: tons of letters 大量的信件I’ve got tons of work to do. 我有很多工作要做。3 weigh a toninformal to be very heavy【非正式】非常沉重: Your bag weighs a ton! 你的包真沉!