What does "first light" mean?

The time when light first appears in the morning; dawn, especially the start of dawn.

What is a synonym for "first light"?

Common synonyms include: aurora, break of day, break of the day, cockcrow, crepuscule, dawn.

noun

noun ·Rare ·Advanced level

Noun

1
The time when light first appears in the morning; dawn, especially the start of dawn. uncountable
2
the first light of day wordnet
3
The first use of a telescope or other instrument to capture an astronomical image. uncountable