From Longman Dictionary of Contemporary Englishreveillere‧veil‧le /rɪˈvæli $ ˈrevəli/ noun [singular, uncountable] PMAa special tune played as a signal to wake soldiers in the morning, or the time at which it is played
Examples from the Corpus
reveille• Although reveille had been at 0400 hours, the landing would not be made until first light at 0850.• At 4 am the klaxon for reveille sounded, and half an hour later the breakfast gong.• The first vehicle patrols were out at 0600 hours, so reveille was at 0430 hours.• Their feet are an awful dream of bunions - but the buffalo's brazil nut bugle-horns can never sound reveille.• The cadets wake to reveille at 6:55 a.m.Origin reveille (1600-1700) French réveillez! “wake up!”, from réveiller “to wake up”, from Latin vigilare “to stay awake” 