Twilight refers to the soft glowing light from the sky when the sun is below the horizon, caused by the reflection of the sun's rays from the atmosphere.
In literature, twilight often symbolizes the transition between day and night, or metaphorically represents a period of uncertainty or decline.
The term "twilight" also refers to:
1. The popular vampire romance novel series by Stephenie Meyer
2. A state of ambiguity or obscurity
3. The final stages of something