Mason–Dixon Line

Mason–Dixon Line /ˌmeÉȘsn̩ˈdÉȘksən/ proper noun
Mason–Dixon Line
/ˌmeÉȘsn̩ˈdÉȘksən/
proper noun
Britannica Dictionary definition of MASON–DIXON LINE

the Mason–Dixon Line

: boundary between northern and southern states of the U.S.