In the World of Warcraft world, a person who has transfered to Illidan server from another server, and thus upping our server queue time.
I had a 1500 server queue because of all these damn illigrants!
Someone who enters the country illegally, but is eventually allowed to stay.
Kap was worried when everyone found out he was an illigrant. But after being here for twenty years, no one cared he entered the country illegally.