reveille Meaning, Definition & Usage

  1. noun (military) signal to wake up
    wake-up signal.
  2. noun a signal to get up in the morning; in the military it is a bugle call at sunrise

WordNet

Re*veil"le noun
Etymology
F. réveil, fr. réveiller to awake; pref. re- re- + pref. es- (L. ex) + veiller to awake, watch, L. vigilare to watch. The English form was prob. taken by mistake from the French imper. réveillez,2d pers. pl. See Vigil.
Definitions
  1. (Mil.) The beat of drum, or bugle blast, about break of day, to give notice that it is time for the soldiers to rise, and for the sentinels to forbear challenging. "Sound a reveille." Dryden.
    For at dawning to assail ye Here no bugles sound reveille. Sir W. Scott.

Webster 1913