What is another word for boundary?

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

The line or relatively narrow space that marks the outer limit of something
“The western boundary of the wood.”
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.”
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.”
A real or imaginary point beyond which a person or thing cannot go
“Extending the boundaries of press freedom.”
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