But still his native country lies
Beyond the boundaries of the skies.
That bright and tranquil stream, the boundary of Louth and Meath.
Sensation and reflection are the boundaries of our thoughts.
Syn. -- Limit; bound; border; term; termination; barrier; verge; confines; precinct. Bound, Boundary. Boundary, in its original and strictest sense, is a visible object or mark indicating a limit. Bound is the limit itself. But in ordinary usage the two words are made interchangeable.