demarcator
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a word derived from
demarcate.
demarcateverb (used with object)to determine or mark off the boundaries or limits of.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“A dream of dark and troubling things,” Lynch called it, and it was and is, a film people view as a demarcator.
From The Guardian ● Mar. 22, 2017
Jones cannot even accept the word as a demarcator of taste.
From BBC ● Jun. 3, 2011