ton

Noun

(countable) A ton is a metric unit of weight that as three main values : the international metric ton that is exactly 1,000 kilograms, the short ton used in Northern America that is 2,000 pounds (about 907 kilograms), and the long ton used in United Kingdom that is 2,240 pounds or about 1016 kilograms.
(informal) (often plural) A ton is also a great amount of something, or many things.
Today I have tons of things to do: how discouraging!