noun
boundary
BOWND-ree
noun
1
A line or edge that marks where one area ends and another begins.
"The fence marks the boundary between the two farms."
"She set clear boundaries about what topics were off-limits at work."
How to Use Boundary
Learner’s notesIn plain EnglishA dividing line between two areas — physical, or (increasingly) personal and emotional.
Memory tip
In everyday talk, "boundaries" is often used for personal limits people set in relationships, not just physical borders.
Trace the full origin ↓
Common pairings
set boundaries
cross a boundary
national boundary
Word Forms
boundaries plural
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The fence marks the _____ between the two farms.
Etymology
From bound (a limit) plus the suffix -ary.