gistfile1.txt

/* Place this code in a file name
~/Library/KeyBindings/DefaultKeyBinding.dict
You make have to create the ~/Library/KeyBindings/ directory*/

{
        "^w"="deleteWordBackward:";

        /* Here are some other examples, which I'm not currently using
           For all you'd ever want to know about keybindings in OS X, check out
           http://xahlee.org/emacs/osx_keybinding.html
        "~f"="moveWordForward:";
        "~b"="moveWordBackward:";
        "~<"="moveToBeginningOfDocument:";
        "~>"="moveToEndOfDocument:";
        "~v"="pageUp:";
        "~d"="deleteWordForward:";*/
}