Definition of "sea-line" []

• The horizon at sea; the line where sea and sky seem to meet. (noun)
• Plural Long lines used for fishing in deep water. (noun)

The Century Dictionary (Public Domain)

• "The coast of the Argentine lies to the West, below the sea-line, and some time this morning we crossed the fiftieth parallel of south latitude."
• "Half the sky, from the zenith to the western sea-line, was an astonishing sheet of pure, pale, even gold."
• "The distant sea-line of the north horizon was defined in the calm atmosphere between the north and west points of the compass; but even this did not afford me any idea of the breadth of the lake …."