to refuse to be responsible for or involved with sb/sth :
When her son was arrested again she washed her hands of him.
to refuse to be responsible for or involved with sb/sth :
When her son was arrested again she washed her hands of him.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005