( informal , especially NAmE ) used to tell sb rudely to go away or to stop interfering in sth that does not concern them :
Butt out, Neil! This is none of your business.
( informal , especially NAmE ) used to tell sb rudely to go away or to stop interfering in sth that does not concern them :
Butt out, Neil! This is none of your business.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005