There was a science fiction story in, I believe, Analog some years back set on a prison planet, or what had started out as a prison planet, sort of an extra-terrestrial Australia. There was a whole collection of terms that had shifted in meaning, mostly names of various sorts of criminals that had taken on non-criminal meanings. The only one I can think of is hood-winker. The meaning had changed to refer to the operator of a morse code style communication tower in which the hood-winker would alternately uncover and cover a light source sending messages to anyone within sight of the tower.