( informal ) a place or an activity that is very popular or fashionable :
Judging by the crowds waiting to get in, this seems to be where it's at.
( informal ) a place or an activity that is very popular or fashionable :
Judging by the crowds waiting to get in, this seems to be where it's at.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005