twilight
US /ˈtwaɪ.laɪt/
UK /ˈtwaɪ.laɪt/

1.
crepúsculo, penumbra
the soft glowing light from the sky when the sun is below the horizon, caused by the refraction and scattering of the sun's rays in the upper atmosphere.
:
•
The city lights began to twinkle in the gathering twilight.
Las luces de la ciudad comenzaron a parpadear en el crepúsculo que se acercaba.
•
We enjoyed a quiet walk during the evening twilight.
Disfrutamos de un tranquilo paseo durante el crepúsculo vespertino.
2.
declive, ocaso, final
a period or state of decline or decay, often preceding an end.
:
•
The empire was in its twilight years, slowly fading away.
El imperio estaba en sus años de declive, desvaneciéndose lentamente.
•
He spent his twilight years reflecting on his life.
Pasó sus años de declive reflexionando sobre su vida.
1.
crepuscular
of or relating to the period of twilight.
:
•
The twilight glow cast long shadows across the field.
El resplandor del crepúsculo proyectaba largas sombras sobre el campo.
•
We saw a beautiful twilight sky.
Vimos un hermoso cielo de crepúsculo.