twilight zone

/ˌtwaɪˈlaɪt zoʊn/

Other forms: twilight zones

Definitions of twilight zone

1. noun

   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”

   synonyms: no man's land

   type of:

   ambiguity, equivocalness

   unclearness by virtue of having more than one meaning
2. noun

   the lowest level of the ocean to which light can reach
   type of:

   Davy Jones, Davy Jones's locker, ocean bottom, ocean floor, sea bottom, sea floor, seabed

   the bottom of a sea or ocean