1: (letter) A brain washer. Most educators, college "gang" leaders, and tv channels fall under this category.See Bwash2: (N) An advertising company, one who produces propaganda."I alert you, that is what they wan't one to believe, that is what they are compensated to-do, they truly are bwashers!" 1: (N) a mind washer. Many instructors, school "gang" frontrunners, and television stations come under this group.See Bwash2: (N) An advertising organization, person who creates propaganda.