Cockcrow
/ˈkɑːkkrəʊ/
Definition 1 of 2
Pro Tip 1/3Old-fashioned Usage
Commonly used in historical or traditional contexts, not modern everyday speech. 
In the old tales, knights set out on quests at cockcrow.
Pro Tip 2/3Literal Meaning
Sometimes used to describe the exact moment a rooster crows, not just dawn. 
He promised to leave at cockcrow, when the farm comes to life.
Pro Tip 3/3Figurative Expression
Can indicate the start of any new beginning, not just the morning. 
With this agreement, a new era begins at cockcrow for our village.