Slang for "Newfoundland English." Found this word today in a travel article about Newfoundland. I don't know that it's a word anyone from Newfoundland would use though.
"A Screech-In sounds like something a frustrated ornithologist might indulge in, or a Beltway ritual for stressed-out drivers. But in Newfoundland, it's a traditional ceremony to induct CFAs ("come-from-aways," Newfese for tourists) into the Royal Order of Screechers and thus make them honorary Newfies." --Paula Stone, "A Trip Off the Old Rock," Washington Post, Sunday, April 22, 2007; Page P01.