Definition of Bleach

Noun: bleach bleech

The whiteness that results from removing the colour from something
"a complete bleach usually requires several applications"
An agent that makes things white or colourless
- bleaching agent, blanching agent, whitener
The act of whitening something by bleaching it (exposing it to sunlight or using a chemical bleaching agent)

Verb: bleach bleech

Remove colour from
"The sun bleached the red shirt";
- bleach out, decolor [US], decolour [Brit, Cdn], decolorize [US], decolourize [Brit, Cdn], decolorise [Brit], decolourise [Brit], discolorize [US], discolourise [Brit, Cdn], discolorise [Brit, Cdn]
Make whiter or lighter
"bleach the laundry"