Meaning of the word "at the crack of dawn" in English

What does "at the crack of dawn" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

at the crack of dawn

US /æt ðə kræk əv dɔn/
UK /æt ðə kræk əv dɔn/
"at the crack of dawn" picture

Idiom

1.

very early in the morning, at the first sign of light

Example:
We had to leave at the crack of dawn to catch our flight.
The farmers start their work at the crack of dawn.
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