1. An inexact or poorly defined border or line of demarcation between two areas, regions, or concepts
The rough boundary between the two properties was marked by an old fence.
A fronteira aproximada entre as duas propriedades era marcada por uma cerca antiga.
2. A tentative or preliminary limit used for general purposes rather than precise measurement
We drew a rough boundary on the map to indicate the general service area.
Traçamos um limite impreciso no mapa para indicar a área de serviço geral.