n. One who can't, or who refuses to walk the bleeding edge of technology, preferring old, reliable tools. I.e. one who shuns PDAs for notebooks, pencils and pocket calendars; would rather meet in real life than on MySpace; and who'd still shoot with cameras which require film. A Luddite.
Bill is the kind of retrobate who rides an old, carburated Harley, rather than a new, reliable, fuel-injected sport bike.