mason and dixon line Mason • mason and dixon's line · · · Info · Definitions · Characters · · mason and dixon line · · Text Common · · Latin · · Scripts 20 · · Length 6 · · Syllables Definitions · · · (noun) the boundary between Maryland and Pennsylvania; symbolic dividing line between North and South before the American Civil War. Synonyms: Mason-Dixon line, Mason and Dixon line, Mason and Dixon's line. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 x latin small letter x U+0078