reveille
noun /rɪˈvæli/
/ˈrevəli/
[uncountable]- a tune that is played to wake soldiers in the morning; the time when it is played
- Reveille sounded at first light.
Word Originmid 17th cent.: from French réveillez! ‘wake up!’, imperative plural of réveiller, based on Latin vigilare ‘keep watch’.