PITTSBURGH—What's in a word? Plenty, if you're from Pittsburgh, Pa., where phrases like "Yinz going dahntahn to watch dem Stillers?" are symbols of local identity. A new book by Carnegie Mellon ...

There are few things more Pittsburgh than the Immaculate Reception, the iconic playoff-game-winning Steelers catch that marks its 50th anniversary this week. But one of them is Pittsburghese, that ...