Definition of Boundary - A line or area determining the limits of an area.
"Do not dare pass my boundary!"
I am at the boundary of the field.
She crossed his boundary daringly.
A boundary is a restriction, a line of demarkation. That fence is the boundary between our property. The ball went outside of the boundary.
Never cross the boundary. Boundaries are important for schools. This is the boundary between the U.S. and Canada.
Often times a street is the boundary between two rival gangs.
The man crossed the boundary, therefore he was disqualified.
The earthquake tranforms boundary between the two tectonic plates.
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the ball went outside of the boundary line.
Often, a divergent boundary within a continent will produce rifts, which will produce rift valleys. A divergent boundary may also be referred to as an extensional boundary, a constructive boundary, or a divergent plate boundary.
The boundary of the cliff was easily distinguished by the wind blowing dust up it's face.
there is a boundary i between America and Canada