1. A border, limit, or demarcation line that has not been clearly established, determined, or specified
The undefined boundary between the two properties led to a dispute.
O limite indefinido entre as duas propriedades levou a uma disputa.
2. In abstract or figurative contexts, a lack of clear distinction or separation between concepts, responsibilities, or jurisdictions
There is an undefined boundary between personal and professional life in remote work.
Há um limite indefinido entre a vida pessoal e profissional no trabalho remoto.