twilight zone

Noun
  1. The lowest level of the ocean to which light can reach (synset 109487351)
    is a type of: davy jones, davy jones's locker, ocean bottom, ocean floor, sea bottom, sea floor, seabed - the bottom of a sea or ocean
  2. The ambiguous region between two categories or states or conditions (usually containing some features of both) (synset 104833046)
    "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"
    is a type of: ambiguity, equivocalness - unclearness by virtue of having more than one meaning
    same as: no man's land

Other Searches