Word
boundary
Meanings
a line that divides two areas of land or places; an edge or border
a limit on what is acceptable or allowed in relationships or behavior
a limit of what something includes or how far it can go (scope or range)
Definition
A boundary is a line or limit that separates areas, defines what is allowed, or marks where something ends.
A boundary can be a physical dividing line, such as the edge of a property, a fence, or a national border. It can also be an abstract limit, like rules about acceptable behavior or the scope of a task. In both cases, a boundary helps clarify separation, responsibility, and expectations.
Examples
- The hikers reached the boundary of the park just as the light began to fade.
- I need to set a clear boundary with my colleagues so my evenings stay uninterrupted.
- The committee agreed that its boundary of responsibility ends at policy design, not implementation.
- She crossed the boundary between criticism and personal attack, and the room fell quiet.
Common mistake
Learners often confuse boundary with border, using border for personal limits instead of boundary.
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