Definition of middle state in English:

middle state

noun

  • US. Any of the states of New York, New Jersey, and Pennsylvania, and sometimes also Maryland and Delaware (which originally formed the middle part of the United States, intermediate between New England and the Southern states). Usually in plural.

Origin

Middle English (in an earlier sense). From middle + state.

Pronunciation

middle state

/ˌmɪdl ˈsteɪt/