Potash (noun)

A potassium-rich mixture of salts, typically obtained by burning wood or other plant material, and used as a fertilizer, in glassmaking, and in soap and other products.

Origin:

Late middle english (denoting potash alum): from medieval latin potas, potassa "potash", from arabic al-qāl "ashes of plants".

Examples:

1. Potash was used as a fertilizer to improve soil fertility.
2. The potash industry was important for the country's economy.
3. The potash was used to make glass and soap.
4. The potash mines were a source of employment for many people.
5. The potash was obtained by burning wood and other plant materials.