Definitions

1. noun

a type of mineral substance, especially potassium carbonate, used in making glass and soap, and as a fertilizer.

“The farmer used potash to fertilize his crops.”

2. noun

an old-fashioned term for potassium, especially in the form of potassium carbonate.

“The chemist studied the properties of potash in the laboratory.”

3. noun

a type of ash derived from wood, especially used as a fertilizer.

“The gardener applied potash to her plants to promote growth.”

4. verb

to treat something with potash, especially to clean or bleach it.

“The factory potashed the cloth to give it a whiter appearance.”