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  1.  
    [countable]
    (plural tons, ton)
    a unit for measuring weight, in the UK 2 240 pounds (long ton) and in the US 2 000 pounds (short ton)吨（英国为 2 240 磅，即长吨；美国为 2 000 磅，即短吨）
    • (informal) What have you got in this bag? It weighs a ton (= is very heavy).你这口袋里装的是什么？重死了！🔊🔊
    compare tonneTopics Maths and measurementb2
  2. [countable] a unit for measuring the size of a ship. 1 ton is equal to 100 cubic feet.注册吨，吨位（船舶大小的计量单位，1 吨等于 100 立方英尺）
  3.  
    tons
    [plural] (informal) a lot大量；许多
    • They've got tons of money.他们腰缠万贯。🔊🔊
    • I've still got tons to do.我还有许多事要做。🔊🔊
  4. a/the ton
     (British English, informal) 100, especially when connected with a speed of 100 miles per hour100；（尤指）每小时 100 英里的速度
    • He was caught doing a ton.他被发现以每小时 100 英里的速度行车。🔊🔊
    5. Word OriginMiddle English: variant of tun, both spellings being used for the container and the weight. The senses were differentiated in the late 17th cent.
Idioms
like a ton of bricks
  1. (informal) very heavily; very severely非常沉重；极为严厉
    • Disappointment hit her like a ton of bricks.她大失所望。🔊🔊
    • They came down on him like a ton of bricks (= criticized him very severely).他们狠狠批评了他一顿。🔊🔊