1. water that has been used for washing dishes
2. any liquid that is weak, tasteless, or unappetizing
Usage: informal

Examples

• She poured the greasy dishwater down the drain.
• The dishwater was still warm from washing the dinner plates.
• This coffee tastes like dishwater.
• The soup was so bland it might as well have been dishwater.
• He dumped the dishwater in the garden to water the plants.
• The restaurant’s tea was weak as dishwater.