It's a common noun, though, isn't it? I'd be happy for it to be used as a proper noun to refer to General Gaol, but I really can't abide it when people use it to refer to prison. It's one of those words that irritates me, like bespoke. I hate the word bespoke, especially since it got handed down in a memo from on high and is being used by all the wannabes on the island.