an unoccupied area between the front lines of opposing armies
source: WordNet 3.0
land that is unowned and uninhabited (and usually undesirable)
source: WordNet 3.0
the ambiguous region between two categories or states or conditions (usually containing some features of both)
But there is still a twilight zone, the tantalizing occurrences that are probably noise but might possibly be a signal. In the twilight zone between humor and vulgarity. In that no man's land between negotiation and aggression.
