Twilight, to a poet, is a time of day when the sky is transitioning from day to night. It is often described as a magical time of day, with the sun setting and the stars beginning to appear in the sky. The crossword solutions for this term are EEN (3 letters) and EVE (3 letters). EEN stands for Evening, which is the time of day when twilight occurs, and EVE stands for Evening Star, which is a poetic term for the planet Venus, which is often the first star to appear in the sky during twilight.