Rapewash Share definition Flag A word between a mixture of Rape & Brainwash, meaning that someone's being molested and mind controlled into serving some deviant person or a cult. Patty Hearst was being Rapewashed long time ago by the so-called "Symbionese Liberation Army". Rapewash by MikeKal October 28, 2010 0 0 Get merch Get the Rapewash mug. Buy Now — $32.95 See more merch