Poetic Twilight is a term that refers to the time of day when the sun is setting and the sky is filled with beautiful colors. It is often associated with a sense of peace and tranquility, and is often used as a metaphor for the end of something. 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 the sun is setting, and EVE stands for Evening, which is the time of day when the night is beginning. Together, these two words represent the transition from day to night, and the beauty of the Poetic Twilight.