definition Blanche
Full Definition of BLANCH. transitive verb. : to take the color out of: as. a: to scald or parboil in water or steam in order to remove the skin from, whiten, or stop enzymatic action in (as food for freezing).b: to bleach by excluding light. intransitive verb. : to become white or pale.â blanchÂ·er noun. to put (food items) in boiling water or steam for a short time. : to suddenly have less color in your face because you are afraid, embarrassed, etc.