Definition of Boundary

a line that marks the limits of an area

Examples of Boundary in a sentence

The boundary between North and South Korea is marked by a barrier that functions as a demilitarized zone.  🔊

The boundary between Mexico and Texas is guarded by customs agents and checkpoints.  🔊

Cars should stay within the boundary of the solid white lines while driving.  🔊

Olympic swimmers must not stray outside the boundary of their lane or they will be disqualified.  🔊

The Girl Scout leader drew a large rectangle around the camp and told the scouts they weren’t allowed past the boundary without an adult.  🔊

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