1. A place, territory, or region that has not been explored, mapped, or known to exist by the general population or by certain groups
The explorers set out to discover the undiscovered country beyond the mountains.
Os exploradores partiram para descobrir o país desconhecido além das montanhas.
2. Used metaphorically to refer to any unknown, unexplored, or mysterious realm or field of knowledge
Quantum physics remains an undiscovered country for many scientists.
A física quântica permanece um país desconhecido para muitos cientistas.
3. A poetic or literary reference to the afterlife or unknown realm beyond death
From whose bourn no traveller returns, puzzles the will and makes us rather bear those ills we have than fly to others in that undiscovered country.
Do qual nenhum viajante retorna, desconcerta a vontade e nos faz suportar os males que temos a voar para outros naquele país desconhecido.