What is another word for boundary?

Need synonyms for boundary? Here's a list of words from our thesaurus that you can use instead.

Noun
The line or relatively narrow space that marks the outer limit of something
“The western boundary of the wood.”
Noun
A line which marks the limits of an area; a dividing line
“An old stone wall marks the boundary of the plot to one side, while a rocky hill and concrete wall flanks the other.”
Noun
A limit of something abstract, especially a subject or sphere of activity
“The annihilation of the dinosaurs marks the boundary linking Cretaceous time and Tertiary time.”
Noun
A real or imaginary point beyond which a person or thing cannot go
“Extending the boundaries of press freedom.”
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