demarcation
NounWordNet 3.0
Noun (2)
- the boundary of a specific areaSynonyms: limitdemarcation line
- a conceptual separation or distinction“there is a narrow line between sanity and insanity”Synonyms: linedividing linecontrast
Webster's Dictionary (GCIDE)
Demarcation \De`mar*ca"tion\, n. [F. d['e]marcation; pref. d['e]- (L. de) + marquer to mark, of German origin. See Mark.] The act of marking, or of ascertaining and setting a limit; separation; distinction. [1913 Webster]
The speculative line of demarcation, where obedience ought to end and resistance must begin, is faint, obscure, and not easily definable. --Burke. [1913 Webster]