frontier
noun
[ ˈfrʌntɪə ]
• a line or border separating two countries.
• "international crime knows no frontiers"
Similar:
border,
boundary,
partition,
borderline,
dividing line,
bounding line,
demarcation line,
perimeter,
limit,
edge,
rim,
marches,
bounds,
Origin:
late Middle English: from Old French frontiere, based on Latin frons, front- ‘front’.
