The time just after sunset, when the light is half-faded, but the world is not yet totally dark, is twilight . If you are between two states, like asleep and awake, that can also be called a twilight moment. TWILIGHT meaning : 1 : the light from the sky at the end of the day when night is just beginning; 2 : the period when day is ending and night is beginning often used before another noun TWILIGHT meaning : 1. the period just before it becomes completely dark in the evening: 2. the final part of a…. Learn more. Definition of twilight noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.