Railroads changed America. They hauled manufactured goods, spare parts, mail, and millions of everyday folks across a country that used to take weeks to cross on foot or wagon. But railroading also built its own tight-knit culture, complete with its own slang. Take highball, the old signal for "all clear, full speed ahead," or caboose, that funny little car that used to trail every freight train. Both are still tossed around today, decades after steam gave way to diesel. Here are 10 more terms that show just how colorful railroad talk really was.