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Boundary

/ˈbaʊndəri/

A line or limit that separates one area, group, or part from another.

Synonyms:

This word has no antonyms

They have a hard time defining the boundaries of their knowledge.

And he cannot forget the bird calls and the boundary stones.

The river forms a natural boundary between the two countries.

Late Middle English: from medieval Latin boundaria, from bunda meaning boundary, of unknown origin.

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