the border between the two states of Maryland and Pennsylvania in the US that traditionally divides the north of the US from the south. In the past, this was the border between those southern states that supported slavery and the northern ones that did not.
Synonyms and related words
Areas of specific countries
ACT
AONB
Bantustan
the Mason-Dixon Line
US /ˌmeɪs(ə)n ˈdɪksən ˌlaɪn/
DEFINITIONS1
1
the border between the two states of Maryland and Pennsylvania in the U.S. that traditionally divides the north of the U.S. from the south. In the past, this was the border between those southern states that supported slavery and the northern ones that did not.