What is Short Ton?

Legal Definition
The short ton is a unit of weight equal to 2,000 pounds (907.18474 kg), that is most commonly used in the United States where it is known simply as the ton.
-- Wikipedia
Legal Definition
A weight unit equal to 2,000 pounds or 907.18 kilos. Referred to in the Us as a ton. Other countries use short ton to differentiate from a long ton, 2,240 pounds and the metric tonne at 2,204 pounds.