n. the line or relatively narrow space that marks the outer limit of something
This river forms a natural boundary between the two states.
This river forms a natural boundary between the two states.
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What river was the boundary between Texas and Louisiana?
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A convergent boundary is an area where two tectonic plates collide.
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The river will delimit the boundary between the two properties.
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He was not allowed to sell the product over the zonal boundary.
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What did the boundary guard let Phoenix and Shanghai borrow?
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The U.S. - Russia boundary extends through the Bering Strait.
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border; bound; boundary line
center
3 syllables
bound-a-ry
foundry
boundary
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