Colditz is a castle in Germany, in a town of the same name. In World War II the German army used it as a prison for Allied officers, especially men who had already escaped from other camps. The castle sits high on a rock, and it was meant to be almost impossible to leave. Though actually, some prisoners did escape, and that is why the name became famous in Britain — books, a television series, a board game. Today people, especially in British English, sometimes compare a place to Colditz if you can hardly get out: a strict school, a remote camp, an office that never lets you go home. So the word is both a real place and, in talk, a nickname for a trap.

科爾迪茨（二戰德軍戰俘堡）；比喻極難逃出的地方