Brainwash has 4 different meanings across 1 category:
Verb
A distorting effect upon one's memory, belief, or ideas, as by propaganda.
persuade completely, often through coercion
"The propaganda brainwashed many people"
submit to brainwashing; indoctrinate forcibly
To affect one's mind by using extreme mental pressure or any other mind-affecting process. (e.g. hypnosis)