What does "reveille" mean?

The sounding of a bugle or drum early in the morning to awaken soldiers.

What is a synonym for "reveille"?

Common synonyms include: alarm, alarm, alarum, angelus, angelus bell, arousal.

/ˈɹɛ.və.li/ noun

noun ·Rare ·Advanced level

Noun

1
The sounding of a bugle or drum early in the morning to awaken soldiers. countable, uncountable
"A bugler and his brisk reveille woke them most mornings."
2
a signal to get up in the morning; in the military it is a bugle call at sunrise wordnet
3
(military) signal to wake up wordnet

"Tom played Reveille on his bugle every morning."

From French réveillez, imperative form of réveiller (“to wake”).