1. To establish, indicate, or designate the limits or borders of an area, territory, or concept
The fence marks the boundaries between the two properties.
A cerca marca os limites entre as duas propriedades.
2. To set clear limits on behavior, responsibilities, or relationships
It's important to mark boundaries in professional relationships.
É importante marcar limites nas relações profissionais.
3. To physically or visually delineate where something begins or ends
The stones mark the boundaries of the garden.
As pedras marcam os limites do jardim.