verb (used with object), verb (used without object)
to make or become white.
Origin: 1250–1300; Middle English whitenen; Related forms
Whiten, blanch, bleach mean to make or become white. To whiten implies giving a white color or appearance by putting a substance of some kind on the outside: to whiten shoes. To blanch implies taking away natural or original color throughout: to blanch celery by growing it in the dark. To bleach implies making white by placing in (sun) light or by using chemicals: to bleach linen, hair.