MASON–DIXON LINE


Meaning of MASON–DIXON LINE in English

■ noun (in the US) the boundary between Maryland and Pennsylvania, taken as the northern limit of the slave-owning states before the abolition of slavery.

Origin

named after Charles Mason and Jeremiah Dixon , who surveyed it in 1763–7.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.