boundary
noun
a line or limit where one thing ends and another begins, or something that indicates such a line or limit.
boundaries
-
pluralof boundary.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"A disaster originating in one part of the Himalayan region can have consequences far beyond national boundaries, affecting river systems, ecosystems, livelihoods and communities across South Asia."
From Barron's ● Sep. 3, 2026
Managers are adjusting to a world where buying the first round and cracking a joke could be seen as keeping the mood light—or blurring boundaries, writes Callum Borchers.
From The Wall Street Journal ● Sep. 2, 2026
But if you’re not speaking up and setting boundaries, her assumption that your offer included dinner is just as reasonable as your assumption that it didn’t.
From MarketWatch ● Sep. 2, 2026
Open champion in history at 16 years and 9 months, says her physicist father maintained healthy boundaries.
From Los Angeles Times ● Sep. 2, 2026
Joaquin felt himself stepping toward the abyss with no boundaries to keep him from falling.
From "Far from the Tree" by Robin Benway
