county line

1. 1.

   the boundary between two counties

   Broaderboundary

Questions about county line

What does county line mean?

county line means "the boundary between two counties".

Is county line a common word?

county line is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.