daystar
Synonym discussion
Sense: noun/1
'Daystar' is a poetic or old-fashioned way to name Venus when it appears before sunrise. 'Morning star' is the plainest modern label for the same sight, so it works better in everyday explanation. 'Venus' is the scientific name and suits factual or astronomical writing without any literary color. 'Dawn star' is another poetic option, but it is much less common than 'morning star.' 'Evening star' refers to the same planet in a different position in the sky, after sunset rather than before dawn. Use 'daystar' when you want a more elevated image, such as in a poem or a historical description of the bright planet leading the sunrise.
Etymology
'Daystar' is an old English compound built from 'day' and 'star.' It originally named a bright heavenly body linked with the coming of daylight, especially Venus before sunrise, and it was later also used in poetic writing for the sun itself.