frontier

Noun
  1. is a type of: wild, wilderness - a wild and uninhabited area left in its natural condition
  2. is a type of: bound, boundary, bounds - the line or plane indicating the limit or extent of something
    specific instances: triple frontier - the border area where Argentina and Brazil and Paraguay meet; an active South American center for contraband and drug trafficking and money laundering; a suspected locale for Islamic extremist groups
  3. is a type of: bailiwick, discipline, field, field of study, study, subject, subject area, subject field - a branch of knowledge

Other Searches