1. A region or territory whose boundaries have not been clearly defined, marked, or established by legal, physical, or administrative means
The undemarcated area between the two countries has been a source of conflict for decades.
A área não demarcada entre os dois países tem sido uma fonte de conflito por décadas.
2. A space or zone lacking clear boundaries or territorial designation
The undemarcated area in the forest made it difficult for hikers to know which trail to follow.
A área não demarcada na floresta dificultava os caminhantes a saberem qual trilha seguir.