( informal ) used when admitting that sth is true, to ask why it should be considered important :
Yes, I wrote the article. What of it?
( informal ) used when admitting that sth is true, to ask why it should be considered important :
Yes, I wrote the article. What of it?
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005