noun
- a substance used to make something whiter or to remove stains
Examples
- She added fabric whitener to the washing machine.
- The teeth whitener helped remove coffee stains.
- Coffee whitener is available in powder or liquid form.
- He used a whitener to brighten his yellowed shirts.
- The laundry whitener made the white clothes look new again.
- Optical whiteners are added to many detergents.