To trace or mark the outline or boundary of something; to delineate or demarcate clearly.
A variant or shortened form of 'delineate', from Latin 'delineare' meaning 'to sketch out', from 'de-' (completely) + 'linea' (line).
While 'deline' is less common than 'delineate', it captures the essential act of drawing boundaries that shapes human civilization - from property lines to national borders, our world is quite literally defined by the lines we draw.
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