Noun; A place where people of a geekier nature can be themselves without the fear of ridicule; an area where cosplay is accepted as being normal and out of costume people are rejected and despised. Normally a comic book store or a gaming shop.
Craig: Um... dude, why are you dressed as Spock?
Geoff: Oh. I'm heading over to the nerdist colony to flash my sonic screwdriver at some orion slave girls. Wanna come?
Craig: ...Sure, why the force not? *grabs Batman costume*