1.the time of day immediately following sunset;
he loved the twilight
2.the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth
3.a condition of decline following successes;
in the twilight of the empire
4.lighted by or as if by twilight;
The dusky night rides down the sky/And ushers in the morn-Henry Fielding