Marl (noun)

1. A type of soil or sediment that contains a mixture of clay and limestone.
2. A soil or sediment that is composed primarily of clay and limestone and is used as a soil amendment and in the manufacture of cement.

Origin:

From the old english word "meal" meaning "clay" or "soil".

Examples:

1. The marl soil was rich in minerals and good for growing crops.
2. The marl was used to improve the fertility of the soil.
3. The marl was also used in the manufacture of cement.
4. The marl was mined from pits and quarries.
5. The marl can be used to make a lime-rich soil for horticulture and agriculture.