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English definition of “bleach”

bleach

noun [U] uk   /bliːtʃ/ us  
a strong chemical used for cleaning things or removing colour from things

bleach

verb [T or I] uk   /bliːtʃ/ us  
to remove the colour from something or make it lighter, with the use of chemicals or by the effect of light from the sun; to become lighter in this way : Gary's had his hair bleached. There was nothing there except for a pile of sun-bleached bones. The bones of oxen were bleaching in the sun beside the trail.
(Definition of bleach from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of bleach?
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