frontier

1. n. 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. Source: opted

2. n. An outwork. Source: opted

3. a. Lying on the exterior part; bordering; conterminous; as, a frontier town. Source: opted

4. a. Of or relating to a frontier. Source: opted

5. v. i. To constitute or form a frontier; to have a frontier; -- with on. Source: opted

6. n. a wilderness at the edge of a settled area of a country Source: wordnet

7. n. an international boundary or the area (often fortified) immediately inside the boundary Source: wordnet

8. n. an undeveloped field of study; a topic inviting research and development Source: wordnet

9. n:100 n. a wilderness at the edge of a settled area of a country n. an international boundary or the area (often fortified) immediately inside the boundary n. an undeveloped field of study; a topic inviting research and development Source: ecdict

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