frontiersman

From frontiers +‎ man.

frontiersman (plural frontiersmen)

1. A person who lives on the borders of a country, or in a wild and undeveloped area on the fringes of civilization.
   • 2002, Colin Jones, The Great Nation, Penguin, published 2003, pages 136–7:

     The inhabitant's of England's North American colonies outnumbered French Canadians some ten to one, but the French were tough, fur-trapping frontiersmen who posed a considerable military threat.