1. Borders or boundaries that are unclear, indefinite, or open to multiple interpretations, often lacking precise demarcation or legal definition
The ambiguous borders between the two territories have caused decades of dispute.
As fronteiras ambíguas entre os dois territórios causaram décadas de disputa.
2. In figurative usage, unclear or ill-defined boundaries between concepts, jurisdictions, or responsibilities
There are ambiguous borders between art and commerce in the digital age.
Existem fronteiras ambíguas entre arte e comércio na era digital.