A more thorough explanation:

Definition: Suling is a historical term that refers to the quantity of land that can be plowed in a year or a hide of land. It is also known as swoling or sulung.

Example: In medieval England, a farmer's suling was the amount of land he could plow in a year using a team of oxen.

This example illustrates how suling was used to measure the productivity of a farmer's land. It was an important measure of wealth and status in medieval society.