demarcation
1. [ noun ] the boundary of a specific area
Synonyms: limit demarcation_line
Related terms: boundary upper_limit lower_limit three-mile_limit city_limit demarcate
2. [ noun ] (psychology) a conceptual separation or demarcation
Synonyms: contrast dividing_line line
Examples:

: "there is a narrow line between sanity and insanity"

Related terms: differentiation Rubicon contrast
Similar spelling:   demarcate
  Demarsico
  Demarest
  Demarcus
  demarche