Definition of in-crowd:
(adv) :
At or towards the interior of a defined space, such as a building or room.
(adv) :
Towards the speaker or other reference point.
(adv) :
So as to be enclosed or surrounded by something.
(adj) :
(not comparable) Located indoors, especially at home or at one's office or place of work.
(adj) :
(not comparable) Located inside something.
(adv) :
(in combination, after a verb) Denotes a gathering of people assembled for the stated activity, sometimes, though not always, suggesting a protest.