A racially offensive epithet used towards Native Americans. However, Columbus was wrong, this racial slur was in fact meant for inhabitants of India and has now been recently claimed at the University of Washington.
Modern equivalent of "Nigga", except its used to refer to Indians who, thanks to Kumar, are finally in mainstream American culture.
Can be used in reference to other people who are "down with the brown". This EVEN includes white people, as long as they're tight with some Indians.
"Yo what up my injun!"
"I'm gonna have to go fuck that injun up!"
"Shame on a injun"