Definition of "demarcations" [demarcations]

• Plural form of demarcation. (noun)

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• "Rather, I think the problem is that it is unclear what kind of demarcations like “privilege” or “class” really do exist in US society, and, to the extent such demarcations exist, it’s unclear whether the pre-college life experience of undergraduates is an adequate basis for applying those demarcations."
• "She was restless, tired of the handful of books on her shelf, the same four walls with all their familiar demarcations, the unchanged roads she traveled back and forth between work at the restaurant and home, sinking further into loneliness without the energy to take the first steps outside the hole she had unwittingly dug."
• "Most demarcations of historical epochs are necessarily vague."