used to emphasize what you are saying or to ask sb if they really mean what they say :
I mean to say, you should have known how he would react!
Do you mean to say you've lost it?
used to emphasize what you are saying or to ask sb if they really mean what they say :
I mean to say, you should have known how he would react!
Do you mean to say you've lost it?
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005