boundary

US /ˈbaʊndəri, -dri/

UK /'baʊndrɪ/

B1

noun

  • A division or border to separate two areas
  • Something that indicates or fixes a limit or extent.
  • A line that marks the limits of an area; a border.
  • A limit to what is acceptable or reasonable.
  • A limit or extent to something.
  • The border or edge of a region or set.
  • In sports, a line or marker indicating the edge of the playing area.

Examples

This job crosses the traditional boundary between social work and health care.

We've just crossed the boundary into Sussex.