[rev-uh-lee; British ri-val-ee] /ˈrɛv ə li; British rɪˈvæl i/ Show IPA
a signal, as of a drum or bugle, sounded early in the morning to awaken military personnel and to alert them for assembly.
a signal to arise.
Origin 1635–45; < Frenchréveillez, plural imperative of réveiller to awaken, equivalent to r(e)-re- + éveiller,Old Frenchesveillier ≪ Latinēvigilāre to watch, be vigilant (ē-e-1 + vigilāre to watch; see vigil)
a signal, given by a bugle, drum, etc, to awaken soldiers or sailors in the morning
the hour at which this takes place
[C17: from French réveillez! awake! from re- + Old French esveillier to be wakeful, ultimately from Latin vigilāre to keep watch; see vigil]