1. A musical composition or melody that has been lost to time or is no longer performed or remembered
The composer's aria esquecida was discovered in an old manuscript after decades of obscurity.
A ária esquecida do compositor foi descoberta num manuscrito antigo após décadas de obscuridade.
2. Figuratively, something from the past that has been abandoned or left behind
That childhood dream became an aria esquecida in her pursuit of practicality.
Aquele sonho da infância tornou-se uma ária esquecida na sua busca por praticidade.