1. during the quiet, peaceful hours of nighttime; in the tranquil darkness of night
In the stillness of the night, she found peace and solitude.
Na quietude da noite, ela encontrou paz e solidão.
2. a poetic or literary expression referring to the calm and silence characteristic of nighttime
The poet wrote of love awakening in the stillness of the night.
O poeta escreveu sobre o amor despertando na quietude da noite.