That part of a country which fronts or faces another country or an unsettled region; the marches; the border, confine, or extreme part of a country, bordering on another country; the border of the settled and cultivated part of a country; as, the frontier of civilization.
Lying on the exterior part; bordering; conterminous; as, a frontier town.
The margin between the occupied land and the wilderness in the settlement of the US.
A region just beyond or at the edge of a settled area.
The wilderness on the edge of a settled area in a country.
a line expressing the furthest extent of settled territory and separating it from the empty of unorganized territory beyond it.
a wilderness at the edge of a settled area of a country; "the individualism of the frontier in Andrew Jackson's day"
an international boundary or the area (often fortified) immediately inside the boundary
the border between two countries
The boundary around a country.
The far edge of a country, where few people live.
A transition area located between settled country and what was considered wilderness.