To defend your nationality, race, so, etc. in an uneccessary rude way.
Danielle was so totally cronxing out, earlier.
by Zilf September 20, 2007
As in Croydon, Surrey/Greater london.... As in the C-R-Oh Noooooo! As in the epicenter of the universe.
"Fuck Bromley - Its all about the Cronx!"
by JadeRoxyPizzle January 29, 2009