What is the meaning of Bleach?

Pale; bleak.

To treat with bleach, especially so as to whiten (fabric, paper, etc.) or lighten (hair).

To be whitened or lightened (by the sun, for example).

To lose color due to stress-induced expulsion of symbiotic unicellular algae.

To make meaningless; to divest of meaning; to make empty.

A chemical, such as sodium hypochlorite or hydrogen peroxide, or a preparation of such a chemical, used for disinfecting or whitening.

A variety of bleach.

An act of bleaching; exposure to the sun.

A disease of the skin characterized by hypopigmentation and itching, believed in the 17th century to be a form a leprosy.

To stay awake through the night.

Source: wiktionary.org