Dishwater (noun)

1. Water used for washing dishes.
2. Water that has been used to wash dishes, often containing bits of food and suds.

Origin:

Dish (noun) + water (noun).

Examples:

1. She poured the dishwater down the drain.
2. He was washing the dishes in dishwater.
3. She decided to use hot dishwater to wash the floor.
4. The dishwater was dirty, so she changed it.
5. It was a hot summer day and dishwater was not enough to clean the dishes, so she added some dish soap.